#
# 2024-10-03T04:53:43.193846
#
# make KBUILD_BUILD_USER=KernelCI LD=riscv64-linux-gnu-ld LLVM_IAS=1 ARCH=riscv LLVM=1 CROSS_COMPILE=riscv64-linux-gnu- CC="ccache clang" O=/tmp/kci/linux/build -C/tmp/kci/linux -j4
#
make: Entering directory '/tmp/kci/linux'
make[1]: Entering directory '/tmp/kci/linux/build'
  SYNC    include/config/auto.conf.cmd
  GEN     Makefile
  GEN     Makefile
  WRAP    arch/riscv/include/generated/uapi/asm/errno.h
  WRAP    arch/riscv/include/generated/uapi/asm/ioctl.h
  WRAP    arch/riscv/include/generated/uapi/asm/fcntl.h
  WRAP    arch/riscv/include/generated/uapi/asm/ioctls.h
  WRAP    arch/riscv/include/generated/uapi/asm/ipcbuf.h
  WRAP    arch/riscv/include/generated/uapi/asm/mman.h
  WRAP    arch/riscv/include/generated/uapi/asm/msgbuf.h
  WRAP    arch/riscv/include/generated/uapi/asm/param.h
  UPD     include/generated/uapi/linux/version.h
  WRAP    arch/riscv/include/generated/uapi/asm/poll.h
  WRAP    arch/riscv/include/generated/uapi/asm/posix_types.h
  WRAP    arch/riscv/include/generated/uapi/asm/resource.h
  WRAP    arch/riscv/include/generated/uapi/asm/sembuf.h
  WRAP    arch/riscv/include/generated/uapi/asm/shmbuf.h
  WRAP    arch/riscv/include/generated/uapi/asm/siginfo.h
  UPD     include/config/kernel.release
  WRAP    arch/riscv/include/generated/uapi/asm/signal.h
  WRAP    arch/riscv/include/generated/uapi/asm/socket.h
  WRAP    arch/riscv/include/generated/uapi/asm/sockios.h
  HOSTCC  scripts/dtc/dtc.o
  WRAP    arch/riscv/include/generated/uapi/asm/stat.h
  WRAP    arch/riscv/include/generated/uapi/asm/statfs.h
  UPD     include/generated/compile.h
  WRAP    arch/riscv/include/generated/uapi/asm/swab.h
  WRAP    arch/riscv/include/generated/uapi/asm/termbits.h
  WRAP    arch/riscv/include/generated/uapi/asm/termios.h
  UPD     include/generated/utsrelease.h
  WRAP    arch/riscv/include/generated/uapi/asm/types.h
  HOSTCC  scripts/dtc/flattree.o
  SYSHDR  arch/riscv/include/generated/uapi/asm/unistd_32.h
  SYSHDR  arch/riscv/include/generated/uapi/asm/unistd_64.h
  HOSTCC  scripts/dtc/fstree.o
  HOSTCC  scripts/dtc/data.o
  HOSTCC  scripts/dtc/livetree.o
  HOSTCC  scripts/dtc/treesource.o
  HOSTCC  scripts/dtc/srcpos.o
  HOSTCC  scripts/dtc/checks.o
  HOSTCC  scripts/dtc/util.o
  LEX     scripts/dtc/dtc-lexer.lex.c
  YACC    scripts/dtc/dtc-parser.tab.[ch]
  HOSTCC  scripts/dtc/libfdt/fdt.o
  HOSTCC  scripts/dtc/libfdt/fdt_ro.o
  HOSTCC  scripts/dtc/libfdt/fdt_wip.o
  HOSTCC  scripts/dtc/libfdt/fdt_sw.o
  HOSTCC  scripts/dtc/libfdt/fdt_rw.o
  HOSTCC  scripts/dtc/libfdt/fdt_strerror.o
  HOSTCC  scripts/dtc/libfdt/fdt_empty_tree.o
  HOSTCC  scripts/dtc/libfdt/fdt_addresses.o
  HOSTCC  scripts/dtc/libfdt/fdt_overlay.o
  HOSTCC  scripts/dtc/fdtoverlay.o
  HOSTCC  scripts/dtc/dtc-lexer.lex.o
  HOSTCC  scripts/dtc/dtc-parser.tab.o
  WRAP    arch/riscv/include/generated/asm/early_ioremap.h
  WRAP    arch/riscv/include/generated/asm/flat.h
  WRAP    arch/riscv/include/generated/asm/kvm_para.h
  WRAP    arch/riscv/include/generated/asm/mmzone.h
  WRAP    arch/riscv/include/generated/asm/parport.h
  WRAP    arch/riscv/include/generated/asm/spinlock.h
  WRAP    arch/riscv/include/generated/asm/spinlock_types.h
  WRAP    arch/riscv/include/generated/asm/qrwlock.h
  WRAP    arch/riscv/include/generated/asm/qrwlock_types.h
  WRAP    arch/riscv/include/generated/asm/user.h
  WRAP    arch/riscv/include/generated/asm/vmlinux.lds.h
  WRAP    arch/riscv/include/generated/asm/device.h
  WRAP    arch/riscv/include/generated/asm/div64.h
  WRAP    arch/riscv/include/generated/asm/dma-mapping.h
  WRAP    arch/riscv/include/generated/asm/dma.h
  WRAP    arch/riscv/include/generated/asm/emergency-restart.h
  WRAP    arch/riscv/include/generated/asm/hardirq.h
  WRAP    arch/riscv/include/generated/asm/hw_irq.h
  WRAP    arch/riscv/include/generated/asm/irq_regs.h
  WRAP    arch/riscv/include/generated/asm/kmap_size.h
  WRAP    arch/riscv/include/generated/asm/local.h
  WRAP    arch/riscv/include/generated/asm/local64.h
  WRAP    arch/riscv/include/generated/asm/msi.h
  WRAP    arch/riscv/include/generated/asm/percpu.h
  WRAP    arch/riscv/include/generated/asm/preempt.h
  WRAP    arch/riscv/include/generated/asm/runtime-const.h
  WRAP    arch/riscv/include/generated/asm/rwonce.h
  WRAP    arch/riscv/include/generated/asm/serial.h
  WRAP    arch/riscv/include/generated/asm/shmparam.h
  WRAP    arch/riscv/include/generated/asm/softirq_stack.h
  WRAP    arch/riscv/include/generated/asm/trace_clock.h
  WRAP    arch/riscv/include/generated/asm/unaligned.h
  WRAP    arch/riscv/include/generated/asm/vga.h
  WRAP    arch/riscv/include/generated/asm/video.h
  SYSTBL  arch/riscv/include/generated/asm/syscall_table_32.h
  HOSTLD  scripts/dtc/fdtoverlay
  SYSTBL  arch/riscv/include/generated/asm/syscall_table_64.h
  HOSTLD  scripts/dtc/dtc
  DTC     arch/riscv/boot/dts/canaan/canaan_kd233.dtb
  CC      scripts/mod/empty.o
  HOSTCC  scripts/mod/mk_elfconfig
  CC      scripts/mod/devicetable-offsets.s
  DTC     arch/riscv/boot/dts/canaan/k210_generic.dtb
  DTC     arch/riscv/boot/dts/canaan/sipeed_maix_bit.dtb
  DTC     arch/riscv/boot/dts/canaan/sipeed_maix_dock.dtb
  DTC     arch/riscv/boot/dts/canaan/sipeed_maix_go.dtb
  DTC     arch/riscv/boot/dts/canaan/sipeed_maixduino.dtb
  UPD     scripts/mod/devicetable-offsets.h
  MKELF   scripts/mod/elfconfig.h
  HOSTCC  scripts/mod/modpost.o
  HOSTCC  scripts/mod/file2alias.o
  HOSTCC  scripts/mod/sumversion.o
  HOSTCC  scripts/mod/symsearch.o
  HOSTLD  scripts/mod/modpost
  CC      kernel/bounds.s
  CHKSHA1 ../include/linux/atomic/atomic-arch-fallback.h
  CHKSHA1 ../include/linux/atomic/atomic-instrumented.h
  UPD     include/generated/timeconst.h
  CHKSHA1 ../include/linux/atomic/atomic-long.h
  UPD     include/generated/bounds.h
  CC      arch/riscv/kernel/asm-offsets.s
In file included from ../arch/riscv/kernel/asm-offsets.c:12:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/asm-offsets.c:12:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/asm-offsets.c:12:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/asm-offsets.c:12:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/asm-offsets.c:12:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/asm-offsets.c:12:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/asm-offsets.c:12:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/asm-offsets.c:12:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/asm-offsets.c:12:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  UPD     include/generated/asm-offsets.h
  CALL    ../scripts/checksyscalls.sh
  CC      init/main.o
  AR      usr/built-in.a
  CC      arch/riscv/kernel/vendor_extensions/andes.o
  AR      certs/built-in.a
  CC      mm/filemap.o
  CC      kernel/sched/core.o
  AR      arch/riscv/kernel/vendor_extensions/built-in.a
  AR      arch/riscv/kernel/probes/built-in.a
  AR      arch/riscv/kernel/tests/built-in.a
  CC      arch/riscv/kernel/pi/cmdline_early.o
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/filemap.c:20:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/core.c:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/main.c:21:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/pi/fdt_early.o
  CC      arch/riscv/kernel/pi/string.o
13 warnings generated.
  UPD     init/utsversion-tmp.h
  CC      init/do_mounts.o
  CC      arch/riscv/kernel/pi/ctype.o
  CC      arch/riscv/kernel/pi/lib-fdt.o
13 warnings generated.
  CC      mm/mempool.o
  CC      arch/riscv/kernel/pi/lib-fdt_ro.o
  CC      arch/riscv/kernel/pi/archrandom_early.o
13 warnings generated.
In file included from ../init/do_mounts.c:6:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../init/do_mounts.c:6:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../init/do_mounts.c:6:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/do_mounts.c:6:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/do_mounts.c:6:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/do_mounts.c:6:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/do_mounts.c:6:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/do_mounts.c:6:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/do_mounts.c:6:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/sched/fair.o
  OBJCOPY arch/riscv/kernel/pi/cmdline_early.pi.o
  OBJCOPY arch/riscv/kernel/pi/fdt_early.pi.o
  OBJCOPY arch/riscv/kernel/pi/string.pi.o
  OBJCOPY arch/riscv/kernel/pi/ctype.pi.o
  OBJCOPY arch/riscv/kernel/pi/lib-fdt.pi.o
  OBJCOPY arch/riscv/kernel/pi/lib-fdt_ro.pi.o
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |   OBJCOPY arch/riscv/kernel/pi/archrandom_early.pi.o
        insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mempool.c:15:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      arch/riscv/kernel/pi/built-in.a
  LDS     arch/riscv/kernel/vmlinux.lds
  AS      arch/riscv/kernel/head.o
13 warnings generated.
  CC      arch/riscv/kernel/soc.o
  CC      mm/oom_kill.o
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/fair.c:28:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      init/noinitramfs.o
  CC      arch/riscv/kernel/alternative.o
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/oom_kill.c:29:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../init/noinitramfs.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../init/noinitramfs.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../init/noinitramfs.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/noinitramfs.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/noinitramfs.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/noinitramfs.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/noinitramfs.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/noinitramfs.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/noinitramfs.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  CC      init/calibrate.o
  CC      mm/fadvise.o
  CC      arch/riscv/kernel/cpu.o
  CC      init/init_task.o
13 warnings generated.
  CC      kernel/sched/build_policy.o
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/fadvise.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../init/init_task.c:2:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/cpufeature.o
13 warnings generated.
  CC      mm/maccess.o
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_policy.c:19:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      init/version.o
  AR      init/built-in.a
  AR      fs/notify/dnotify/built-in.a
  AR      fs/notify/inotify/built-in.a
  AR      fs/notify/fanotify/built-in.a
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |           AR      fs/notify/built-in.a
insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/maccess.c:8:
In file included from ../arch/riscv/include/asm/tlb.h:32:
In file included from ../include/asm-generic/tlb.h:15:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/iomap/trace.o
  AS      arch/riscv/kernel/entry.o
13 warnings generated.
  CC      mm/page-writeback.o
  CC      arch/riscv/kernel/irq.o
In file included from ../fs/iomap/trace.c:5:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/iomap/trace.c:5:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/iomap/trace.c:5:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/trace.c:5:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/trace.c:5:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/trace.c:5:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/trace.c:5:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/trace.c:5:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/trace.c:5:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11  CC      fs/iomap/iter.o
:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/page-writeback.c:21:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/irq.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  CC      kernel/sched/build_utility.o
  CC      arch/riscv/kernel/process.o
In file included from ../fs/iomap/iter.c:7:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/iomap/iter.c:7:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/iomap/iter.c:7:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/iter.c:7:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/iter.c:7:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/iter.c:7:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/iter.c:7:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/iter.c:7:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/iter.c:7:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings13 warnings generated.
 generated.
  CC      fs/iomap/buffered-io.o
  CC      mm/folio-compat.o
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sched/build_utility.c:15:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/process.c:15:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/process.c:15:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/process.c:15:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/process.c:15:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/process.c:15:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/process.c:15:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/process.c:15:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/process.c:15:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/process.c:15:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      arch/riscv/kernel/ptrace.o
In file included from ../fs/iomap/buffered-io.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/iomap/buffered-io.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/iomap/buffered-io.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/buffered-io.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/buffered-io.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/buffered-io.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/buffered-io.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/buffered-io.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/buffered-io.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/folio-compat.c:7:
In file included from ../include/linux/migrate.h:6:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      mm/readahead.o
13 warnings generated.
  CC      arch/riscv/kernel/reset.o
  AR      kernel/sched/built-in.a
  CC      kernel/locking/mutex.o
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:5913 warnings generated.
: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      fs/iomap/direct-io.o
In file included from ../mm/readahead.c:116:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/return_address.o
13 warnings generated.
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/mutex.c:29:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      mm/swap.o
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/return_address.c:9:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/iomap/direct-io.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/iomap/direct-io.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/iomap/direct-io.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/direct-io.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/direct-io.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/direct-io.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/direct-io.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/direct-io.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/direct-io.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      arch/riscv/kernel/setup.o
13 warnings generated.
13 warnings generated.
  CC      kernel/locking/semaphore.o
  CC      fs/iomap/fiemap.o
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/swap.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/semaphore.c:34:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      mm/truncate.o
In file included from ../fs/iomap/fiemap.c:8:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/iomap/fiemap.c:8:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/iomap/fiemap.c:8:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/fiemap.c:8:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/fiemap.c:8:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/fiemap.c:8:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/fiemap.c:8:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/fiemap.c:8:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/fiemap.c:8:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/setup.c:21:
In file included from ../include/linux/efi.h:20:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/iomap/seek.o
13 warnings generated.
  CC      kernel/locking/rwsem.o
13 warnings generated.
  CC      arch/riscv/kernel/signal.o
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/truncate.c:12:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/iomap/seek.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/iomap/seek.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/iomap/seek.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/seek.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/seek.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/iomap/seek.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/seek.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/seek.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/iomap/seek.c:9:
In file included from ../include/linux/iomap.h:7:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  AR      fs/iomap/built-in.a
  CC      mm/vmscan.o
  AR      fs/quota/built-in.a
  CC      fs/proc/nommu.o
  CC      kernel/locking/percpu-rwsem.o
13 warnings generated.
  CC      arch/riscv/kernel/syscall_table.o
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/vmscan.c:19:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/nommu.c:18:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/locking/spinlock.o
13 warnings generated.
  CC      fs/proc/task_nommu.o
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      arch/riscv/kernel/sys_riscv.o
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/spinlock.c:21:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      mm/shrinker.o
13 warnings generated.
  CC      kernel/locking/osq_lock.o
  CC      fs/proc/inode.o
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/locking/rtmutex_api.o
13 warnings generated.
  CC      arch/riscv/kernel/sys_hwprobe.o
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/shrinker.c:2:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/proc/root.o
13 warnings generated.
  CC      mm/shmem.o
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/locking/qrwlock.o
13 warnings generated.
  CC      arch/riscv/kernel/time.o
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/root.c:19:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/shmem.c:28:
In file included from ../include/linux/ramfs.h:5:
In file included from ../include/linux/fs_parser.h:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)In file included from __../mm/shmem.cr:a28w:
_In file included from r../include/linux/ramfs.he:a5d:
wIn file included from (../include/linux/fs_parser.hP:CI11_:
IIn file included from O../include/linux/fs_context.hB:A14:
SIn file included from E ../include/linux/security.h+: 35a:
dIn file included from d../include/linux/bpf.hr:)31):
;In file included from ../include/linux/memcontrol.h
:      13| :
                                                        ~~~~~~~~~~ ^In file included from 
../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
../include/uapi/linux/byteorder/little_endian.hIn file included from :../include/linux/interrupt.h37::1151:
:In file included from  note: ../include/linux/hardirq.hexpanded from macro '__le16_to_cpu':
11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
   In file included from 37../include/asm-generic/hardirq.h | :#17d:
eIn file included from f../include/linux/irq.h:i20n:
eIn file included from  ../include/linux/io.h_:_14l:
eIn file included from 16../arch/riscv/include/asm/io.h_:t136o:
_c../include/asm-generic/io.hp:u1115(:x55):  ((warning: _performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]_
force __u16)( _1115_ | l        er1e6t)u(rxn) )(
p      o|                                                   ^r
t > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/locking/qrwlock.c:13:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/proc/base.o
13 warnings generated.
  CC      mm/util.o
13 warnings generated.
  AR      kernel/locking/built-in.a
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/time.c:9:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/power/qos.o
  CC      arch/riscv/kernel/traps.o
In file included from ../fs/proc/base.c:68:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc/base.c:68:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/base.c:68:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/base.c:68:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/base.c:68:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/base.c:68:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/base.c:68:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/base.c:68:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/base.c:68:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/util.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^In file included from ../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]

  ../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
548 |         val = __raw_readbIn file included from ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  (PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
574 |         val = __le32_../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #deto_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
fine __le16_to_cpuIn file included from (x) ((__force __u16)(__le16)(x))
      |                                                   ^
../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.hIn file included from :5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
../include/asm-generic/io.hIn file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  :595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
 |         val = __le32_t../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
o_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/power/qos.c../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  :40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  104 | #define insb(addr, buff585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
er, count) __../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
insb(PCI_IOBASE../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
 + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  105 | #define insw(addr, buffer, count104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
) __inswIn file included from (PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.hIn file included from ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
:9:
In file included from ../include/linux/hardirq.h:11:
In file included from In file included from ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
:118:55: note: expanded from macro 'outsb'In file included from 
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
760 |         insl(adIn file included from ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  dr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps.c:16:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/power/qos.c:40:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      mm/mmzone.o
13 warnings generated.
  CC      kernel/power/main.o
13 warnings generated.
13 warnings generated.
  CC      arch/riscv/kernel/riscv_ksyms.o
  CC      fs/proc/generic.o
  CC      mm/vmstat.o
  CC      arch/riscv/kernel/stacktrace.o
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/main.c:17:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/proc/array.o
  CC      kernel/power/process.o
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/vmstat.c:26:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/stacktrace.c:13:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/array.c:61:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/cacheinfo.o
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/process.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      mm/backing-dev.o
13 warnings generated.
  CC      fs/proc/fd.o
13 warnings generated.
  CC      kernel/power/suspend.o
  CC      arch/riscv/kernel/patch.o
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/backing-dev.c:3:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      mm/mm_init.o
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/power/suspend.c:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/fd.c:11:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/vendor_extensions.o
13 warnings generated.
  CC      fs/proc/proc_tty.o
  CC      arch/riscv/kernel/traps_misaligned.o
13 warnings generated.
  AR      kernel/power/built-in.a
  CC      kernel/printk/printk.o
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mm_init.c:20:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/traps_misaligned.c:9:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_tty.c:13:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc/proc_tty.c:13:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/proc_tty.c:13:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_tty.c:13:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_tty.c:13:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_tty.c:13:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_tty.c:13:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_tty.c:13:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_tty.c:13:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
In file included from ../kernel/printk/printk.c:24:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/printk/printk.c:24:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/printk/printk.c:24:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
  CC      fs/proc/cmdline.o
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(ad  CC      mm/percpu.o
dr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk.c:24:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk.c:24:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk.c:24:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk.c:24:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk.c:24:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk.c:24:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      arch/riscv/kernel/unaligned_access_speed.o
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__fo  CC      fs/proc/consoles.o
rce __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/percpu.c:89:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AS      arch/riscv/kernel/copy-unaligned.o
13 warnings generated.
  CC      kernel/printk/printk_safe.o
  AS      arch/riscv/kernel/fpu.o
  CC      arch/riscv/kernel/kernel_mode_fpu.o
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/printk/printk_safe.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/proc/cpuinfo.o
  CC      arch/riscv/kernel/vector.o
13 warnings generated.
  CC      mm/slab_common.o
13 warnings generated.
  CC      kernel/printk/nbcon.o
  CC      arch/riscv/kernel/kernel_mode_vector.o
  CC      fs/proc/devices.o
  CC      kernel/printk/printk_ringbuffer.o
  CC      arch/riscv/kernel/smpboot.o
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/slab_common.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      mm/compaction.o
  CC      kernel/printk/sysctl.o
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smpboot.c:18:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/devices.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/smp.o
13 warnings generated.
  CC      fs/proc/interrupts.o
  AR      kernel/printk/built-in.a
  CC      kernel/irq/irqdesc.o
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/compaction.c:12:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      mm/show_mem.o
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^In file included from ../arch/riscv/kernel/smp.c:12:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^

In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/interrupts.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdesc.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/proc/loadavg.o
13 warnings generated.
  CC      arch/riscv/kernel/cpu_ops.o
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/show_mem.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/irq/handle.o
  CC      fs/proc/meminfo.o
13 warnings generated.
  CC      mm/interval_tree.o
  CC      arch/riscv/kernel/cpu_ops_spinwait.o
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/handle.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/irq/manage.o
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/interval_tree.c:10:
In file included from ../include/linux/rmap.h:12:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AS      arch/riscv/kernel/suspend_entry.o
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/suspend.o
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
13In file included from  warning../include/linux/interrupt.hs: generated11.
:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/meminfo.c:6:
In file included from ../include/linux/hugetlb.h:10:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      mm/list_lru.o
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/manage.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/proc/stat.o
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/suspend.c:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/list_lru.c:14:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/stat.c:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  CC      mm/workingset.o
  CC      arch/riscv/kernel/perf_regs.o
13 warnings generated.
  CC      kernel/irq/spurious.o
13 warnings generated.
  CC      fs/proc/uptime.o
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/spurious.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/workingset.c:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/uptime.c:9:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/proc/util.o
13 warnings generated.
  CC      kernel/irq/resend.o
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/perf_regs.c:6:
In file included from ../include/linux/perf_event.h:52:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      mm/debug.o
13 warnings generated.
  CC      arch/riscv/kernel/cpu-hotplug.o
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/resend.c:15:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:1314 warning:
sIn file included from  generated../arch/riscv/include/asm/io.h.
:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/debug.c:11:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/irq/chip.o
  CC      fs/proc/version.o
13 warnings generated.
  CC      mm/gup.o
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/kernel/cpu-hotplug.c:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/chip.c:11:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/proc/softirqs.o
13 warnings generated.
  AR      arch/riscv/kernel/built-in.a
  CC      arch/riscv/mm/init.o
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/gup.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/softirqs.c:3:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/irq/dummychip.o
13 warnings generated.
  CC      mm/mmap_lock.o
13 warnings generated.
  CC      fs/proc/namespaces.o
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/init.c:13:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u3213 warnings generated.
 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/dummychip.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/mm/cacheflush.o
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/mmap_lock.c:6:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __forc  CC      kernel/irq/devres.o
e)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/namespaces.c:8:
In file included from ../include/net/net_namespace.h:43:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      mm/nommu.o
13 warnings generated.
  CC      fs/proc/self.o
  CC      arch/riscv/mm/context.o
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/devres.c:3:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/irq/irqdomain.o
  CC      fs/proc/thread_self.o
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/nommu.c:23:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/mm/pmem.o
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/irqdomain.c:7:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/proc/proc_sysctl.o
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../arch/riscv/mm/pmem.c:7:
In file included from ../include/linux/libnvdimm.h:14:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      mm/page_alloc.o
13 warnings generated.
13 warnings generated.
  AR      arch/riscv/mm/built-in.a
  CC      kernel/irq/proc.o
  AR      arch/riscv/net/built-in.a
  WRAP    arch/riscv/boot/dts/canaan/k210_generic.dtb.S
  AS      arch/riscv/boot/dts/canaan/k210_generic.dtb.o
  AR      arch/riscv/boot/dts/built-in.a
  AR      arch/riscv/errata/built-in.a
  CC      arch/riscv/purgatory/purgatory.o
  CC      arch/riscv/purgatory/sha256.o
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/proc.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/proc_sysctl.c:10:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/page_alloc.c:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/irq/cpuhotplug.o
  AS      arch/riscv/purgatory/entry.o
13 warnings generated.
  CC      fs/proc/kmsg.o
  CC      arch/riscv/purgatory/string.o
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/cpuhotplug.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/purgatory/ctype.o
  AS      arch/riscv/purgatory/memcpy.o
  AS      arch/riscv/purgatory/memset.o
  AS      arch/riscv/purgatory/strcmp.o
13 warnings generated.
  CC      kernel/irq/pm.o
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc/kmsg.c:18:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  AS      arch/riscv/purgatory/strlen.o
  AR      fs/proc/built-in.a
  CC      fs/kernfs/mount.o
  AS      arch/riscv/purgatory/strncmp.o
  LD      arch/riscv/purgatory/purgatory.ro
  LD      arch/riscv/purgatory/purgatory.chk
  AS      arch/riscv/purgatory/kexec-purgatory.o
  AR      arch/riscv/purgatory/built-in.a
  AR      arch/riscv/built-in.a
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      fs/kernfs/inode.o
In file included from ../kernel/irq/pm.c:8:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/mount.c:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/irq/msi.o
13 warnings generated.
  CC      mm/init-mm.o
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../fs/kernfs/inode.c:10:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/kernfs/dir.o
13 warnings generated.
  CC      fs/kernfs/file.o
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/msi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/init-mm.c:13:
In file included from ../include/linux/iommu.h:10:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      mm/memblock.o
13 warnings generated.
  CC      kernel/irq/ipi.o
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/dir.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/file.c:14:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/memblock.c:21:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/kernfs/symlink.o
13 warnings generated.
  AR      ipc/built-in.a
  CC      mm/slub.o
13 warnings generated.
  CC      kernel/irq/ipi-mux.o
13 warnings generated.
  CC      kernel/irq/affinity.o
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/slub.c:14:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/affinity.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernfs/symlink.c:14:
In file included from ../fs/kernfs/kernfs-internal.h:20:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  AR      fs/kernfs/built-in.a
  CC      fs/sysfs/file.o
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/ipi-mux.c:12:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/irq/matrix.o
13 warnings generated.
  CC      fs/sysfs/dir.o
13 warnings generated.
  CC      mm/dmapool.o
  CC      fs/sysfs/symlink.o
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq/matrix.c:9:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      mm/early_ioremap.o
  CC      security/commoncap.o
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../fs/sysfs/symlink.c:16:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      kernel/irq/built-in.a
  CC      kernel/rcu/update.o
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../mm/early_ioremap.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/sysfs/mount.o
13 warnings generated.
  AR      mm/built-in.a
  AR      crypto/built-in.a
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_  CC      block/partitions/core.o
IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/update.c:25:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../security/commoncap.c:9:
In file included from ../include/linux/lsm_hooks.h:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/sysfs/mount.c:18:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/rcu/sync.o
13 warnings generated.
13 warnings generated.
  CC      fs/sysfs/group.o
  AR      security/built-in.a
  CC      block/partitions/msdos.o
In file included from ../block/partitions/core.c:13:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/partitions/core.c:13:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/partitions/core.c:13:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/partitions/core.c:13:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/partitions/core.c:13:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/partitions/core.c:13:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/partitions/core.c:13:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/partitions/core.c:13:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/partitions/core.c:13:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/rcu/srcutree.o
13 warnings generated.
  CC      block/partitions/efi.o
In file included from ../block/partitions/msdos.c:31:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/partitions/msdos.c:31:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/partitions/msdos.c:31:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/partitions/msdos.c:31:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/partitions/msdos.c:31:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/partitions/msdos.c:31:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/partitions/msdos.c:31:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/partitions/msdos.c:31:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/partitions/msdos.c:31:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      fs/sysfs/built-in.a
  CC      fs/devpts/inode.o
13 warnings generated.
  CC      block/bdev.o
In file included from ../block/partitions/efi.c:90:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/partitions/efi.c:90:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/partitions/efi.c:90:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/partitions/efi.c:90:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/partitions/efi.c:90:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/partitions/efi.c:90:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/partitions/efi.c:90:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/partitions/efi.c:90:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/partitions/efi.c:90:
In file included from ../block/partitions/check.h:2:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/rcu/tree.o
In file included from ../fs/devpts/inode.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/devpts/inode.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/devpts/inode.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/devpts/inode.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/devpts/inode.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/devpts/inode.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/devpts/inode.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/devpts/inode.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/devpts/inode.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UP13 warnings generated.
PER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      block/partitions/built-in.a
  CC      block/fops.o
13 warnings generated.
  AR      fs/devpts/built-in.a
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cp  CC      fs/ext2/balloc.o
u_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/tree.c:26:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../block/bdev.c:14:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/bdev.c:14:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/bdev.c:14:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bdev.c:14:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bdev.c:14:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bdev.c:14:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/bdev.c:14:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/bdev.c:14:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/bdev.c:14:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../block/fops.c:9:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/fops.c:9:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/fops.c:9:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/fops.c:9:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/fops.c:9:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/fops.c:9:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/fops.c:9:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/fops.c:9:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/fops.c:9:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      block/bio.o
In file included from ../fs/ext2/balloc.c:15:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/ext2/balloc.c:15:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/ext2/balloc.c:15:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/balloc.c:15:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/balloc.c:15:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/balloc.c:15:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/balloc.c:15:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/balloc.c:15:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/balloc.c:15:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      block/elevator.o
13 warnings generated.
  CC      fs/ext2/dir.o
In file included from ../block/bio.c:6:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/bio.c:6:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/bio.c:6:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bio.c:6:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bio.c:6:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bio.c:6:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/bio.c:6:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/bio.c:6:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/bio.c:6:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../block/elevator.c:28:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/elevator.c:28:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/elevator.c:28:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/elevator.c:28:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/elevator.c:28:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/elevator.c:28:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/elevator.c:28:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/elevator.c:28:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/elevator.c:28:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/ext2/dir.c:25:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/ext2/dir.c:25:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/ext2/dir.c:25:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/dir.c:25:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/dir.c:25:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/dir.c:25:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/dir.c:25:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/dir.c:25:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/dir.c:25:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  CC      block/blk-core.o
13 warnings generated.
  CC      kernel/rcu/rcu_segcblist.o
  CC      block/blk-sysfs.o
13 warnings generated.
  CC      fs/ext2/file.o
In file included from ../block/blk-core.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-core.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-core.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-core.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-core.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-core.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-core.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-core.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-sysfs.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-sysfs.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__forceIn file included from ../block/blk-core.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  __u32)(__le32)(x))
      |                                                   ^
1115 |         return (port > MMIO_UPPER_LIMIT) In file included from ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
../block/blk-sysfs.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-sysfs.c:8:
In file included from In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
../include/linux/bio.h:  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/asm-generic/io.h../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
:  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h105:53: note: expanded from macro 'insw'
  :37:51: note: expanded from macro '__le16_to_cpu'
   105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
37 | #define In file included from __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
../block/blk-sysfs.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
760 |         insl(addr, buIn file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  ffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
:106:53: note: expanded from macro 'insl'
  106 | ../include/asm-generic/io.h#define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  In file included from ../block/blk-sysfs.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
595 |         __rawIn file included from ../block/blk-sysfs.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
_writewIn file included from ../block/blk-sysfs.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../block/blk-sysfs.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rcu/rcu_segcblist.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/ext2/file.c:23:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/ext2/file.c:23:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/ext2/file.c:23:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/file.c:23:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/file.c:23:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/file.c:23:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/file.c:23:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/file.c:23:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/file.c:23:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  AR      kernel/rcu/built-in.a
13 warnings generated.
  AR      kernel/livepatch/built-in.a
  CC      block/blk-flush.o
13 warnings generated.
  CC      kernel/dma/mapping.o
  CC      fs/ext2/ialloc.o
13 warnings generated.
  CC      block/blk-settings.o
In file included from ../fs/ext2/ialloc.c:18:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/ext2/ialloc.c:18:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/ext2/ialloc.c:18:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/ialloc.c:18:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/ialloc.c:18:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/ialloc.c:18:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/ialloc.c:18:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/ialloc.c:18:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/ialloc.c:18:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../block/blk-flush.c:68:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-flush.c:68:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-flush.c:68:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-flush.c:68:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-flush.c:68:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-flush.c:68:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-flush.c:68:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-flush.c:68:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-flush.c:68:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/dma/mapping.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../block/blk-settings.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-settings.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-settings.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-settings.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-settings.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-settings.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-settings.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-settings.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-settings.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  CC      kernel/dma/direct.o
  CC      fs/ext2/inode.o
13 warnings generated.
  CC      block/blk-ioc.o
13 warnings generated.
  CC      block/blk-map.o
In file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         iIn file included from ../fs/ext2/inode.c:28:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
ns  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
w(addr, buffer, c../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  ount);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
561 |         val = In file included from __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../kernel/dma/direct.c../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9In file included from :
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
../fs/ext2/inode.c:28:
In file included from ../include/linux/pagemap.h:11In file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.hIn file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:In file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/ext2/inode.c:28:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), In file included from ../kernel/dma/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/inode.c:28:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/inode.c:28:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/inode.c:28:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/inode.c:28:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/inode.c:28:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/inode.c:28:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../block/blk-ioc.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-ioc.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-ioc.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-ioc.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-ioc.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-ioc.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-ioc.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-ioc.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-ioc.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/dma/coherent.o
In file included from ../block/blk-map.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-map.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-map.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-map.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-map.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-map.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-map.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-map.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-map.c:8:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  CC      fs/ext2/ioctl.o
  CC      block/blk-merge.o
13 warnings generated.
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/dma/coherent.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/ext2/namei.o
13 warnings generated.
  AR      kernel/dma/built-in.a
  CC      kernel/entry/common.o
In file included from ../fs/ext2/ioctl.c:11:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/ext2/ioctl.c:11:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/ext2/ioctl.c:11:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/ioctl.c:11:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/ioctl.c:11:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/ioctl.c:11:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/ioctl.c:11:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/ioctl.c:11:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/ioctl.c:11:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../block/blk-merge.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-merge.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-merge.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-merge.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-merge.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-merge.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-merge.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-merge.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-merge.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/ext2/super.o
In file included from ../fs/ext2/namei.c:34:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/ext2/namei.c:34:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/ext2/namei.c:34:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/namei.c:34:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/namei.c:34:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/namei.c:34:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/namei.c:34:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/namei.c:34:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/namei.c:34:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/ext2/symlink.o
13 warnings generated.
  CC      block/blk-timeout.o
In file included from ../fs/ext2/super.c:25:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/ext2/super.c:25:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/ext2/super.c:25:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/super.c:25:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/super.c:25:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/super.c:25:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/super.c:25:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/super.c:25:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/super.c:25:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/entry/common.c:4:
In file included from ../include/linux/entry-common.h:7:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/ext2/symlink.c:21:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/ext2/symlink.c:21:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/ext2/symlink.c:21:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/symlink.c:21:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/symlink.c:21:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/symlink.c:21:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/symlink.c:21:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/symlink.c:21:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/symlink.c:21:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/ext2/trace.o
13 warnings generated.
13 warnings generated.
  CC      block/blk-lib.o
  CC      kernel/entry/syscall_user_dispatch.o
In file included from ../block/blk-timeout.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-timeout.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-timeout.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-timeout.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-timeout.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-timeout.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-timeout.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-timeout.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-timeout.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../fs/ext2/trace.c:2:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/ext2/trace.c:2:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/ext2/trace.c:2:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/trace.c:2:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/trace.c:2:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ext2/trace.c:2:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/trace.c:2:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ext2/trace.c:2:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      block/blk-mq.o
In file included from ../fs/ext2/trace.c:2:
In file included from ../fs/ext2/ext2.h:20:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  AR      fs/ext2/built-in.a
  CC      fs/ramfs/inode.o
In file included from ../block/blk-lib.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-lib.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-lib.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-lib.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-lib.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-lib.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-lib.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-lib.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-lib.c:7:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      kernel/entry/built-in.a
  CC      kernel/time/time.o
13 warnings generated.
  CC      fs/ramfs/file-nommu.o
In file included from ../block/blk-mq.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-mq.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-mq.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-mq.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-mq.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-mq.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ramfs/inode.c:27:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/time.c:31:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  AR      fs/unicode/built-in.a
  AR      fs/hostfs/built-in.a
  CC      fs/open.o
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ramfs/file-nommu.c:11:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/time/timer.o
13 warnings generated.
  AR      fs/ramfs/built-in.a
  CC      fs/read_write.o
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timer.c:21:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/open.c:14:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/open.c:14:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/open.c:14:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/open.c:14:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/open.c:14:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/open.c:14:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/open.c:14:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/open.c:14:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/open.c:14:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      block/blk-mq-tag.o
13 warnings generated.
  CC      fs/file_table.o
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/read_write.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/time/hrtimer.o
In file included from ../block/blk-mq-tag.c:13:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-mq-tag.c:13:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-mq-tag.c:13:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq-tag.c:13:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq-tag.c:13:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq-tag.c:13:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-mq-tag.c:13:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-mq-tag.c:13:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-mq-tag.c:13:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/super.o
In file included from ../fs/file_table.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/file_table.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/file_table.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/file_table.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/file_table.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/file_table.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/file_table.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/file_table.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from 13 warnings generated.
../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/file_table.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      block/blk-stat.o
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      block/blk-mq-sysfs.o
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/super.c:26:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/time/sleep_timeout.o
In file included from ../block/blk-stat.c:10:
In file included from ../block/blk-stat.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-stat.c:10:
In file included from ../block/blk-stat.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-stat.c:10:
In file included from ../block/blk-stat.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-stat.c:10:
In file included from ../block/blk-stat.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-stat.c:10:
In file included from ../block/blk-stat.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-stat.c:10:
In file included from ../block/blk-stat.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-stat.c:10:
In file included from ../block/blk-stat.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-stat.c:10:
In file included from ../block/blk-stat.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-stat.c:10:
In file included from ../block/blk-stat.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      block/blk-mq-cpumap.o
In file included from ../block/blk-mq-sysfs.c:4:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-mq-sysfs.c:4:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-mq-sysfs.c:4:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq-sysfs.c:4:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq-sysfs.c:4:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq-sysfs.c:4:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-mq-sysfs.c:4:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-mq-sysfs.c:4:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../block/blk-mq-sysfs.c:4:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/char_dev.o
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/sleep_timeout.c:12:
In file included from ../kernel/time/tick-internal.h:6:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  CC      block/blk-mq-sched.o
  CC      kernel/time/timekeeping.o
In file included from ../block/blk-mq-cpumap.c:15:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-mq-cpumap.c:15:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-mq-cpumap.c:15:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq-cpumap.c:15:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq-cpumap.c:15:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq-cpumap.c:15:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-mq-cpumap.c:15:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-mq-cpumap.c:15:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-mq-cpumap.c:15:
In file included from ../block/blk.h:5:
In file included from ../include/linux/bio-integrity.h:5:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      block/ioctl.o
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val =../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
 __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../fs/char_dev.c:23:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timekeeping.c:6:
In file included from ../include/linux/timekeeper_internal.h:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../block/blk-mq-sched.c:11:
In file included from ../include/trace/events/block.h:8:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-mq-sched.c:11:
In file included from ../include/trace/events/block.h:8:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-mq-sched.c:11:
In file included from ../include/trace/events/block.h:8:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq-sched.c:11:
In file included from ../include/trace/events/block.h:8:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq-sched.c:11:
In file included from ../include/trace/events/block.h:8:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-mq-sched.c:11:
In file included from ../include/trace/events/block.h:8:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-mq-sched.c:11:
In file included from ../include/trace/events/block.h:8:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-mq-sched.c:11:
In file included from ../include/trace/events/block.h:8:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-mq-sched.c:11:
In file included from ../include/trace/events/block.h:8:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/stat.o
13 warnings generated.
  CC      block/genhd.o
In file included from ../block/ioctl.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/ioctl.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/ioctl.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/ioctl.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/ioctl.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/ioctl.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/ioctl.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/ioctl.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/ioctl.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/time/ntp.o
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/stat.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      block/ioprio.o
In file included from ../block/genhd.c:13:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/genhd.c:13:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/genhd.c:13:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/genhd.c:13:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/genhd.c:13:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/genhd.c:13:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/genhd.c:13:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/genhd.c:13:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/genhd.c:13:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/ntp.c:10:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/exec.o
13 warnings generated.
  CC      block/badblocks.o
13 warnings generated.
  CC      kernel/time/clocksource.o
In file included from ../block/ioprio.c:27:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/ioprio.c:27:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/ioprio.c:27:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/ioprio.c:27:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/ioprio.c:27:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/ioprio.c:27:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/ioprio.c:27:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/ioprio.c:27:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/ioprio.c:27:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/exec.c:33:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      block/blk-rq-qos.o
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/clocksource.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/time/jiffies.o
  CC      block/disk-events.o
13 warnings generated.
  CC      fs/pipe.o
In file included from ../block/blk-rq-qos.c:3:
In file included from ../block/blk-rq-qos.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-rq-qos.c:3:
In file included from ../block/blk-rq-qos.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-rq-qos.c:3:
In file included from ../block/blk-rq-qos.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-rq-qos.c:3:
In file included from ../block/blk-rq-qos.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-rq-qos.c:3:
In file included from ../block/blk-rq-qos.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-rq-qos.c:3:
In file included from ../block/blk-rq-qos.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-rq-qos.c:3:
In file included from ../block/blk-rq-qos.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-rq-qos.c:3:
In file included from ../block/blk-rq-qos.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-rq-qos.c:3:
In file included from ../block/blk-rq-qos.h:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/jiffies.c:7:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      block/blk-ia-ranges.o
In file included from ../block/disk-events.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/disk-events.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/disk-events.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/disk-events.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/disk-events.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/disk-events.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/disk-events.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/disk-events.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/disk-events.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/time/timer_list.o
13 warnings generated.
  CC      block/early-lookup.o
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/pipe.c:17:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../block/blk-ia-ranges.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-ia-ranges.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-ia-ranges.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-ia-ranges.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-ia-ranges.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-ia-ranges.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-ia-ranges.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-ia-ranges.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-ia-ranges.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/timer_list.c:14:
In file included from ../include/linux/nmi.h:9:
In file included from ../arch/riscv/include/asm/irq.h:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      block/bfq-iosched.o
13 warnings generated.
In file included from ../block/early-lookup.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/early-lookup.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/early-lookup.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/early-lookup.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/early-lookup.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/early-lookup.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/early-lookup.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/early-lookup.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../block/early-lookup.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/time/timeconv.o
  CC      fs/namei.o
13 warnings generated.
  CC      block/bfq-wf2q.o
  CC      kernel/time/timecounter.o
In file included from ../block/bfq-iosched.c:118:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/bfq-iosched.c:118:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/bfq-iosched.c:118:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bfq-iosched.c:118:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bfq-iosched.c:118:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bfq-iosched.c:118:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/bfq-iosched.c:118:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/bfq-iosched.c:118:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      kernel/time/alarmtimer.o
In file included from ../block/bfq-iosched.c:118:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/namei.c:25:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../block/bfq-wf2q.c:9:
In file included from ../block/bfq-iosched.h:9:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/bfq-wf2q.c:9:
In file included from ../block/bfq-iosched.h:9:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/bfq-wf2q.c:9:
In file included from ../block/bfq-iosched.h:9:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bfq-wf2q.c:9:
In file included from ../block/bfq-iosched.h:9:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bfq-wf2q.c:9:
In file included from ../block/bfq-iosched.h:9:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bfq-wf2q.c:9:
In file included from ../block/bfq-iosched.h:9:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/bfq-wf2q.c:9:
In file included from ../block/bfq-iosched.h:9:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/bfq-wf2q.c:9:
In file included from ../block/bfq-iosched.h:9:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/bfq-wf2q.c:9:
In file included from ../block/bfq-iosched.h:9:
In file included from ../include/linux/blktrace_api.h:5:
In file included from ../include/linux/blk-mq.h:5:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/alarmtimer.c:18:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      block/bfq-cgroup.o
13 warnings generated.
  CC      kernel/time/posix-timers.o
In file included from ../block/bfq-cgroup.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/bfq-cgroup.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/bfq-cgroup.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bfq-cgroup.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bfq-cgroup.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/bfq-cgroup.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/bfq-cgroup.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/bfq-cgroup.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/bfq-cgroup.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
13 warnings generated.
  CC      block/blk-pm.o
  CC      kernel/time/posix-cpu-timers.o
  CC      fs/fcntl.o
In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-timers.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-cpu-timers.c:12:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../block/blk-pm.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../block/blk-pm.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../block/blk-pm.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-pm.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-pm.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../block/blk-pm.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-pm.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-pm.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../block/blk-pm.c:4:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  AR      block/built-in.a
  CC      lib/math/div64.o
13 warnings generated.
13 warnings generated.
  CC      kernel/time/posix-clock.o
  CC      lib/math/gcd.o
  CC      lib/math/lcm.o
13 warnings generated.
  CC      lib/math/int_log.o
  CC      fs/ioctl.o
  CC      lib/math/int_pow.o
  CC      lib/math/int_sqrt.o
  CC      lib/math/reciprocal_div.o
  CC      lib/math/rational.o
  CC      fs/readdir.o
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from 13 warnings generated.
../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:  CC      kernel/time/itimer.o
136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      lib/math/built-in.a
  CC      lib/crypto/chacha.o
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/readdir.c:19:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/crypto/blake2s.o
13 warnings generated.
13 warnings generated.
  CC      fs/select.o
  CC      fs/dcache.o
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/itimer.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/crypto/blake2s-generic.o
13 warnings generated.
  CC      kernel/time/clockevents.o
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/dcache.c:29:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/crypto/blake2s-selftest.o
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __  AR      lib/crypto/built-in.a
outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/clockevents.c:10:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/argv_split.o
13 warnings generated.
  CC      kernel/time/tick-common.o
  CC      lib/bug.o
13 warnings generated.
  CC      fs/inode.o
13 warnings generated.
  CC      fs/attr.o
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-common.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
In file included from ../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
../include/asm-generic/io.hIn file included from ../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h::35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         In file included from ../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  i585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
nsb(addr, buf../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
fer, count);../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^

      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bug.c:49:
../include/asm-generic/io.hIn file included from :744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  ../include/linux/ftrace.h104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
:10:
In file included from ../include/linux/trace_recursion.h:In file included from 5../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  :
752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:In file included from 11../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.hIn file included from ../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
:17:
In file included from ../include/linux/irq.h:20In file included from :
../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:In file included from ../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.hIn file included from :../fs/inode.c:10:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 7691115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bug.c:49:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../fs/attr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/buildid.o
13 warnings generated.
13 warnings generated.
  CC      kernel/time/tick-broadcast.o
  CC      fs/bad_inode.o
13 warnings generated.
  CC      fs/file.o
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/buildid.c:7:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/filesystems.o
13 warnings generated.
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/tick-broadcast.c:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/cmdline.o
  CC      lib/cpumask.o
13 warnings generated.
  CC      kernel/time/sched_clock.o
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9In file included from ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
:
In file included from   548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769In file included from ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  :574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(In file included from a../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
ddr, buffer, co../include/asm-generic/io.hu:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  n595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
t);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55../include/asm-generic/io.h::605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
 note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr),../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
buffer, In file included from ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
count)
In file included from       ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
|                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/time/sched_clock.c:6:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  AR      kernel/time/built-in.a
  CC      kernel/fork.o
13 warnings generated.
  CC      lib/ctype.o
  CC      fs/namespace.o
  CC      lib/dec_and_lock.o
  CC      lib/decompress.o
13 warnings generated.
  CC      fs/seq_file.o
  CC      lib/dump_stack.o
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/fork.c:34:
In file included from ../include/linux/mempolicy.h:15:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/namespace.c:11:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/dump_stack.c:14:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      lib/earlycpio.o
  CC      lib/extable.o
  CC      fs/xattr.o
13 warnings generated.
  CC      kernel/exec_domain.o
  CC      lib/fdt.o
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/xattr.c:18:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/fdt_addresses.o
  CC      lib/fdt_empty_tree.o
  CC      lib/fdt_ro.o
13 warnings generated.
  CC      fs/libfs.o
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/fdt_rw.o
13 warnings generated.
  CC      fs/fs-writeback.o
13 warnings generated.
  CC      kernel/panic.o
  CC      lib/fdt_strerror.o
  CC      lib/fdt_sw.o
  CC      lib/fdt_wip.o
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      lib/flex_proportions.o
In file included from ../fs/libfs.c:7:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/panic.c:14:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs-writeback.c:24:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/idr.o
13 warnings generated.
  CC      kernel/cpu.o
13 warnings generated.
  CC      kernel/exit.o
13 warnings generated.
  CC      fs/pnode.o
  CC      lib/irq_regs.o
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/cpu.c:13:
In file included from ../include/linux/sched/isolation.h:7:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/is_single_threaded.o
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/exit.c:16:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/splice.o
13 warnings generated.
  CC      kernel/softirq.o
  CC      lib/klist.o
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/splice.c:21:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/softirq.c:13:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      lib/kobject.o
  CC      lib/kobject_uevent.o
13 warnings generated.
  CC      kernel/resource.o
13 warnings generated.
  CC      fs/sync.o
  CC      lib/logic_pio.o
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/kobject_uevent.c:23:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/logic_pio.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOIn file included from B../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
A  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
SE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      | ../include/asm-generic/io.h        ^~~~~~~~~~~~~~~~~~~~~~~~~:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^

../arch/riscv/include/asm/io.h:104:53: In file included from note: ../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
expanded from macro 'insb'
  104 | #deIn file included from ../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count)f;
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
ine insb(aIn file included from ../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
ddr, bufIn file included from fer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
../fs/sync.c:6:
In file included from ../include/linux/blkdev.hIn file included from :9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
../kernel/resource.c:In file included from ../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, bufIn file included from ../fs/sync.c:6:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
fer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/resource.c:21:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      lib/maple_tree.o
13 warnings generated.
  CC      fs/utimes.o
13 warnings generated.
  CC      fs/d_path.o
13 warnings generated.
  CC      kernel/sysctl.o
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sysctl.c:24:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/stack.o
13 warnings generated.
  CC      fs/fs_struct.o
  CC      fs/statfs.o
  CC      fs/fs_pin.o
13 warnings generated.
  CC      kernel/capability.o
  CC      lib/memcat_p.o
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/nsfs.o
  CC      fs/fs_types.o
  CC      lib/nmi_backtrace.o
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/capability.c:17:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/ptrace.o
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/nmi_backtrace.c:18:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/user.o
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/nsfs.c:3:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      lib/objpool.o
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/user.c:18:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/fs_context.o
13 warnings generated.
  CC      fs/fs_parser.o
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ptrace.c:19:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/plist.o
  CC      lib/radix-tree.o
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs_parser.c:9:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/signal.o
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fs_context.c:11:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      kernel/sys.o
  CC      lib/ratelimit.o
13 warnings generated.
  CC      fs/fsopen.o
In file included from ../kernel/signal.c:27:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/signal.c:27:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
  CC      lib/rbtree.o
In file included from ../kernel/signal.c:27:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/signal.c:27:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/signal.c:27:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/signal.c:27:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/signal.c:27:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/signal.c:27:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/signal.c:27:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/sys.c:10:
In file included from ../include/linux/mm_inline.h:8:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/seq_buf.o
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/fsopen.c:8:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  CC      fs/init.o
  CC      lib/siphash.o
13 warnings generated.
  CC      kernel/umh.o
  CC      lib/string.o
  CC      lib/timerqueue.o
  CC      lib/union_find.o
  CC      lib/vsprintf.o
  CC      lib/win_minmax.o
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/init.c:13:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/kernel_read_file.o
13 warnings generated.
  CC      kernel/workqueue.o
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/vsprintf.c:36:
In file included from ../include/linux/rtc.h:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/mnt_idmapping.o
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/workqueue.c:32:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/kernel_read_file.c:5:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/pid.o
13 warnings generated.
  CC      fs/remap_range.o
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/pid.c:37:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBA13 warnings generated.
SE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/remap_range.c:9:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/xarray.o
13 warnings generated.
  CC      fs/pidfs.o
13 warnings generated.
  CC      kernel/task_work.o
13 warnings generated.
  CC      kernel/extable.o
  CC      lib/lockref.o
In file included from ../fs/pidfs.c:13:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/pidfs.c:13:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/pidfs.c:13:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/pidfs.c:13:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/pidfs.c:13:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/pidfs.c:13:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/pidfs.c:13:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/pidfs.c:13:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/pidfs.c:13:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/bcd.o
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/extable.c:7:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/task_work.c:5:
In file included from ../include/linux/resume_user_mode.h:8:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/sort.o
  CC      lib/parser.o
13 warnings generated.
13 warnings generated.
  CC      fs/buffer.o
  CC      kernel/params.o
13 warnings generated.
  CC      lib/debug_locks.o
  CC      kernel/kthread.o
  CC      lib/random32.o
In file included from ../fs/buffer.c:24:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/buffer.c:24:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/buffer.c:24:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/buffer.c:24:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/buffer.c:24:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, coIn file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
u  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
nt)
      |                                          ~~~~~~~~~~ ^
../include/asm-generic/io.hIn file included from ../fs/buffer.c:24:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  :561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
118../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
 | #define outsb(addrIn file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  , buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
574 |         val = _In file included from _le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h../fs/buffer.c:24:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  :35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
778 |         outsw(addr,In file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
 buffer, coun../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
t);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  : note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
605 |         __raw_In file included from wr../fs/buffer.ci:t24e:
lIn file included from (../include/linux/syscalls.h(:u933:
2In file included from  ../include/trace/syscall.h_:_7f:
oIn file included from r../include/linux/trace_events.hc:e9):
cIn file included from p../include/linux/hardirq.hu:_11t:
oIn file included from _./arch/riscv/include/generated/asm/hardirq.hl:e13:
2In file included from (../include/asm-generic/hardirq.hv:a17l:
uIn file included from e../include/linux/irq.h):,20 :
PIn file included from C../include/linux/io.hI:_14IO:
BIn file included from A../arch/riscv/include/asm/io.hS:E136 :
+../include/asm-generic/io.h :a787dd:r2):; 
warning:       performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]| 
                                                      ~~~~~~~~~~ ^  787 |         
outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/buffer.c:24:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/params.c:15:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/kthread.c:19:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      lib/bust_spinlocks.o
  CC      kernel/sys_ni.o
  CC      kernel/nsproxy.o
13 warnings generated.
  CC      kernel/notifier.o
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/nsproxy.c:15:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/notifier.c:3:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../lib/bust_spinlocks.c:15:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/bust_spinlocks.c:15:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/bust_spinlocks.c:15:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bust_spinlocks.c:15:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bust_spinlocks.c:15:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bust_spinlocks.c:15:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bust_spinlocks.c:15:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bust_spinlocks.c:15:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bust_spinlocks.c:15:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      lib/kasprintf.o
13 warnings generated.
  CC      fs/mpage.o
13 warnings generated.
  CC      fs/proc_namespace.o
13 warnings generated.
  CC      kernel/ksysfs.o
  CC      lib/bitmap.o
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/proc_namespace.c:12:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ksysfs.c:15:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../fs/mpage.c:21:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/mpage.c:21:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/mpage.c:21:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOB  CC      kernel/cred.o
ASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/mpage.c:21:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/mpage.c:21:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/mpage.c:21:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/mpage.c:21:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/mpage.c:21:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/mpage.c:21:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      fs/anon_inodes.o
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/cred.c:17:
In file included from ../include/linux/init_task.h:9:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/reboot.o
  CC      lib/scatterlist.o
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../fs/anon_inodes.c:23:
In file included from ../include/linux/pseudo_fs.h:4:
In file included from ../include/linux/fs_context.h:14:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/async.o
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/reboot.c:13:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
13 warnings generated .
1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/binfmt_script.o
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/scatterlist.c:9:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      lib/list_sort.o
13 warnings generated.
  CC      lib/uuid.o
  CC      fs/binfmt_elf_fdpic.o
  CC      fs/binfmt_flat.o
  CC      lib/iov_iter.o
  CC      kernel/range.o
  CC      kernel/smpboot.o
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/binfmt_elf_fdpic.c:26:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/drop_caches.o
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iov_iter.c:3:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      lib/clz_ctz.o
  CC      kernel/ucount.o
  CC      lib/bsearch.o
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../fs/drop_caches.c:6:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      lib/find_bit.o
13 warnings generated.
  CC      fs/sysctls.o
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/bsearch.c:11:
In file included from ../include/linux/kprobes.h:28:
In file included from ../include/linux/ftrace.h:10:
In file included from ../include/linux/trace_recursion.h:5:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      fs/built-in.a
  CC      lib/llist.o
  AS      arch/riscv/lib/clear_page.o
  CC      kernel/regset.o
  CC      arch/riscv/lib/csum.o
  CC      lib/lwq.o
13 warnings generated.
  CC      lib/memweight.o
  CC      lib/kfifo.o
  CC      arch/riscv/lib/delay.o
  CC      lib/percpu-refcount.o
  CC      kernel/ksyms_common.o
  AS      arch/riscv/lib/memcpy.o
  AS      arch/riscv/lib/memmove.o
  AS      arch/riscv/lib/memset.o
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/lib/riscv_v_helpers.o
13 warnings generated.
  CC      lib/rhashtable.o
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/ksyms_common.c:7:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AS      arch/riscv/lib/strcmp.o
  AS      arch/riscv/lib/strlen.o
13 warnings generated.
  CC      lib/base64.o
  CC      kernel/groups.o
  AS      arch/riscv/lib/strncmp.o
  AS      arch/riscv/lib/tishift.o
  CC      kernel/freezer.o
  AS      arch/riscv/lib/xor.o
  AR      arch/riscv/lib/built-in.a
  AR      arch/riscv/lib/lib.a
  AR      drivers/cache/built-in.a
  CC      drivers/irqchip/irqchip.o
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/freezer.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/groups.c:8:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/once.o
13 warnings generated.
  AR      drivers/bus/mhi/built-in.a
  CC      drivers/bus/simple-pm-bus.o
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irqchip.c:14:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  CC      kernel/smp.o
  CC      drivers/irqchip/irq-riscv-intc.o
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/smp.c:17:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/refcount.o
  AR      drivers/bus/built-in.a
  AR      drivers/pinctrl/actions/built-in.a
  AR      drivers/pinctrl/bcm/built-in.a
  AR      drivers/pinctrl/cirrus/built-in.a
  AR      drivers/pinctrl/freescale/built-in.a
  AR      drivers/pinctrl/mediatek/built-in.a
  AR      drivers/pinctrl/mvebu/built-in.a
  AR      drivers/pinctrl/nomadik/built-in.a
  CC      lib/rcuref.o
  AR      drivers/pinctrl/nuvoton/built-in.a
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-intc.c:13:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/pinctrl/nxp/built-in.a
  AR      drivers/pinctrl/qcom/built-in.a
  AR      drivers/pinctrl/sophgo/built-in.a
  AR      drivers/pinctrl/sprd/built-in.a
  AR      drivers/pinctrl/sunplus/built-in.a
13 warnings generated.
  AR      drivers/pinctrl/ti/built-in.a
  CC      drivers/irqchip/irq-riscv-aplic-main.o
  CC      drivers/pinctrl/core.o
13 warnings generated.
  CC      lib/usercopy.o
  CC      kernel/stop_machine.o
  CC      lib/errseq.o
  CC      lib/bucket_locks.o
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-main.c:13:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
In file included from ../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.hIn file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
:11:
In file included from ../include/linux/hardirq.hIn file included from ../drivers/pinctrl/core.c:28:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(In file included from PC../drivers/pinctrl/core.cI_IOBASE +: 28(:
aIn file included from d../include/linux/gpio/driver.hd:r8):
,In file included from  ../include/linux/irqchip/chained_irq.h:b10u:
fIn file included from f../include/linux/irq.he:r20:
,In file included from  ../include/linux/io.hc:o14u:
nIn file included from t../arch/riscv/include/asm/io.h):
136      :
| ../include/asm-generic/io.h                                         ~~~~~~~~~~ ^:
1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/stop_machine.c:19:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/irqchip/irq-riscv-aplic-direct.o
13 warnings generated.
  CC      kernel/utsname_sysctl.o
13 warnings generated.
  CC      drivers/pinctrl/pinctrl-utils.o
  CC      kernel/irq_work.o
  CC      lib/generic-radix-tree.o
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-direct.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/irqchip/irq-riscv-aplic-msi.o
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      lib/bitmap-str.o
In file included from ../kernel/irq_work.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/pinctrl/pinmux.o
13 warnings generated.
  CC      kernel/cpu_pm.o
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-aplic-msi.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/irqchip/irq-riscv-imsic-state.o
  CC      lib/string_helpers.o
  CC      drivers/pinctrl/pinconf.o
  CC      kernel/context_tracking.o
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/context_tracking.c:23:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/pinctrl/pinconf-generic.o
13 warnings generated.
  CC      kernel/iomem.o
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-state.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/hexdump.o
  CC      drivers/pinctrl/devicetree.o
13 warnings generated.
  CC      drivers/irqchip/irq-riscv-imsic-early.o
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/iomem.c:4:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/kstrtox.o
13 warnings generated.
  CC      kernel/rseq.o
  CC      drivers/pinctrl/pinctrl-k210.o
  CC      lib/iomap_copy.o
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-early.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/irqchip/irq-riscv-imsic-platform.o
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/pinctrl/pinctrl-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/iomap_copy.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  CC      lib/devres.o
  AR      kernel/built-in.a
  AR      sound/built-in.a
13 warnings generated.
  AR      virt/lib/built-in.a
  AR      drivers/pinctrl/built-in.a
  AR      virt/built-in.a
  CC      drivers/gpio/gpiolib.o
  AR      drivers/pwm/built-in.a
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      drivers/irqchip/irq-sifive-plic.o
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-riscv-imsic-platform.c:11:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  AR      drivers/leds/blink/built-in.a
  AR      drivers/leds/simple/built-in.a
  CC      drivers/leds/led-core.o
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/devres.c:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      lib/hweight.o
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      lib/bitrev.o
In file included from ../drivers/gpio/gpiolib.c:15:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/irqchip/irq-sifive-plic.c:9:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  AR      drivers/irqchip/built-in.a
  AR      drivers/pci/controller/dwc/built-in.a
  AR      drivers/pci/controller/mobiveil/built-in.a
  AR      drivers/pci/controller/plda/built-in.a
  AR      drivers/pci/controller/built-in.a
  AR      drivers/pci/switch/built-in.a
  CC      drivers/pci/of.o
  CC      lib/crc-itu-t.o
  CC      drivers/leds/led-class.o
13 warnings generated.
  CC      drivers/gpio/gpiolib-devres.o
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  HOSTCC  lib/gen_crc32table
In file included from ../drivers/pci/of.c:12:
In file included from ../include/linux/pci.h:38:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  AR      drivers/pci/built-in.a
  CC      lib/crc7.o
  CC      lib/percpu_counter.o
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-devres.c:17:
In file included from ../drivers/gpio/gpiolib.h:16:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/leds/leds-gpio.o
13 warnings generated.
  CC      drivers/gpio/gpiolib-legacy.o
  CC      lib/syscall.o
  CC      drivers/gpio/gpiolib-of.o
  CC      drivers/leds/uleds.o
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-legacy.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-of.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/checksum.o
13 warnings generated.
  CC      drivers/gpio/gpiolib-cdev.o
13 warnings generated.
  CC      drivers/gpio/gpiolib-swnode.o
  AR      drivers/leds/built-in.a
  AR      drivers/video/backlight/built-in.a
  AR      drivers/video/fbdev/core/built-in.a
  CC      lib/strncpy_from_user.o
  AR      drivers/video/fbdev/omap/built-in.a
  AR      drivers/video/fbdev/omap2/omapfb/dss/built-in.a
  AR      drivers/video/fbdev/omap2/omapfb/displays/built-in.a
  AR      drivers/video/fbdev/omap2/omapfb/built-in.a
  AR      drivers/video/fbdev/omap2/built-in.a
  AR      drivers/video/fbdev/built-in.a
  AR      drivers/video/built-in.a
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-swnode.c:20:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/strnlen_user.o
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpiolib-cdev.c:15:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      lib/sbitmap.o
  CC      lib/group_cpus.o
  CC      lib/devmem_is_allowed.o
13 warnings generated.
  CC      drivers/gpio/gpio-mmio.o
  CC      drivers/gpio/gpio-dwapb.o
  AR      lib/lib.a
  GEN     lib/crc32table.h
  AR      drivers/idle/built-in.a
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AR      drivers/char/ipmi/built-in.a
In file included from ../lib/devmem_is_allowed.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  AR      drivers/amba/built-in.a
  CC      lib/crc32.o
  AR      drivers/clk/actions/built-in.a
  AR      drivers/clk/analogbits/built-in.a
  AR      drivers/clk/bcm/built-in.a
  AR      drivers/clk/imgtec/built-in.a
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AR      drivers/clk/imx/built-in.a
In file included from ../drivers/gpio/gpio-mmio.c:47:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/clk/ingenic/built-in.a
  AR      drivers/clk/mediatek/built-in.a
  AR      drivers/clk/microchip/built-in.a
  AR      drivers/clk/mstar/built-in.a
  AR      drivers/clk/mvebu/built-in.a
  AR      drivers/clk/ralink/built-in.a
  AR      drivers/clk/renesas/built-in.a
  AR      drivers/clk/socfpga/built-in.a
  AR      drivers/clk/sophgo/built-in.a
  AR      drivers/clk/sprd/built-in.a
  AR      drivers/clk/starfive/built-in.a
  AR      drivers/clk/sunxi-ng/built-in.a
  AR      drivers/clk/ti/built-in.a
  AR      drivers/clk/versatile/built-in.a
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-dwapb.c:10:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/clk/xilinx/built-in.a
  CC      drivers/clk/clk-devres.o
13 warnings generated.
  CC      drivers/gpio/gpio-sifive.o
13 warnings generated.
  AR      lib/built-in.a
  CC      drivers/clk/clk-bulk.o
  CC      drivers/clk/clkdev.o
  CC      drivers/clk/clk.o
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/gpio/gpio-sifive.c:9:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/clk/clk-divider.o
13 warnings generated.
  CC      drivers/clk/clk-fixed-factor.o
  AR      drivers/gpio/built-in.a
  AR      drivers/soc/apple/built-in.a
  AR      drivers/soc/aspeed/built-in.a
  AR      drivers/soc/bcm/built-in.a
  CC      drivers/soc/canaan/k210-sysctl.o
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-divider.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/soc/canaan/k210-sysctl.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/clk/clk-fixed-rate.o
  CC      drivers/clk/clk-gate.o
  CC      drivers/clk/clk-multiplier.o
13 warnings generated.
  AR      drivers/soc/canaan/built-in.a
  AR      drivers/soc/fsl/built-in.a
  AR      drivers/soc/fujitsu/built-in.a
  AR      drivers/soc/hisilicon/built-in.a
  AR      drivers/soc/imx/built-in.a
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, c  AR      drivers/soc/ixp4xx/built-in.a
ount)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-multiplier.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/soc/loongson/built-in.a
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fixed-rate.c:12:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/soc/mediatek/built-in.a
13 warnings generated.
  CC      drivers/clk/clk-mux.o
  AR      drivers/soc/microchip/built-in.a
13 warnings generated.
  AR      drivers/soc/nuvoton/built-in.a
  CC      drivers/clk/clk-composite.o
  AR      drivers/soc/pxa/built-in.a
  AR      drivers/soc/amlogic/built-in.a
  AR      drivers/soc/qcom/built-in.a
  AR      drivers/soc/renesas/built-in.a
  AR      drivers/soc/rockchip/built-in.a
  AR      drivers/soc/sunxi/built-in.a
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-gate.c:13:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/soc/ti/built-in.a
  AR      drivers/soc/versatile/built-in.a
13 warnings generated.
  AR      drivers/soc/xilinx/built-in.a
  CC      drivers/clk/clk-fractional-divider.o
  AR      drivers/soc/built-in.a
  AR      drivers/virtio/built-in.a
  AR      drivers/reset/amlogic/built-in.a
  AR      drivers/reset/hisilicon/built-in.a
  AR      drivers/reset/starfive/built-in.a
  AR      drivers/reset/sti/built-in.a
  AR      drivers/reset/tegra/built-in.a
  CC      drivers/reset/core.o
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-mux.c:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/clk/clk-gpio.o
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-fractional-divider.c:43:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/clk/clk-conf.o
13 warnings generated.
  CC      drivers/reset/reset-k210.o
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/reset/core.c:14:
In file included from ../include/linux/gpio/driver.h:8:
In file included from ../include/linux/irqchip/chained_irq.h:10:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/clk/clk-k210.o
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/reset/reset-k210.c:10:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  AR      drivers/tty/vt/built-in.a
  AR      drivers/reset/built-in.a
  AR      drivers/tty/serial/8250/built-in.a
  AR      drivers/char/agp/built-in.a
  CC      drivers/tty/serial/serial_core.o
  CC      drivers/char/mem.o
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clk/clk-k210.c:8:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/tty/serial/serial_base_bus.o
13 warnings generated.
  AR      drivers/clk/built-in.a
In file included from ../drivers/tty/serial/serial_core.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/serial/serial_core.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/serial/serial_core.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from In file included from ../drivers/char/mem.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
../drivers/tty/serial/serial_core.c  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  :
561In file included from  | ../include/linux/kfifo.h        :v40a:
lIn file included from  ../include/linux/dma-mapping.h=: 11_:
_In file included from l../include/linux/scatterlist.he:196:
_In file included from t../arch/riscv/include/asm/io.ho:_136c:
p../include/asm-generic/io.hu(:(752_:_2le:1 6warning:  performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]_
_force)__raw_r  e752a | d        wi(nPsCwI_(IaOdBdArS, E b+u fafdedrr,) )c;o
u      n| t                                                        ~~~~~~~~~~ ^)
;
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../include/uapi/linux/byteorder/little_endian.h../arch/riscv/include/asm/io.h::37105::5153::  note: note: expanded from macro '__le16_to_cpu'expanded from macro 'insw'

   37   | 105# | d#edeffiinen e_ _ilnes1w6(_atdod_rcp,u (bxu)f f(e(r_,_ cfoourncte )_ __u_1i6n)s(w_(_PlCeI1_6I)O(BxA)S)E
       +|                                                    ^(
addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_core.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, coIn file included from un../drivers/char/mem.ct:)19;:

In file included from       ../include/linux/tty.h| :        ^~~~~~~~~~~~~~~~~~~~~~~~~
11:
In file included from ../include/linux/tty_port.h:../arch/riscv/include/asm/io.h5::
106In file included from :../include/linux/kfifo.h53::40 :
note: In file included from expanded from macro 'insl'../include/linux/dma-mapping.h
:11:
In file included from ../include/linux/scatterlist.h:9  :
106In file included from  | ../arch/riscv/include/asm/io.h#:d136:
e../include/asm-generic/io.hf:i574n:e61 :i nwarning: sperforming pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]l
(addr, buff  e574r | ,         cvoauln t=)  ____lien3s2l_(tPoC_Ic_pIuO(B(A_S_El e+32  (_a_dfodrrc)e,) _b_ruafwf_errea,d lc(oPuCnIt_)I
O      B| A                                         ~~~~~~~~~~ ^S
E + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/serial/serial_core.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsbIn file included from (a../drivers/char/mem.cd:d19r:
,In file included from  ../include/linux/tty.hb:u11f:
In file included from f../include/linux/tty_port.he:r5,:
 In file included from c../include/linux/kfifo.ho:u40n:
tIn file included from )../include/linux/dma-mapping.h: 11_:
_In file included from ../include/linux/scatterlist.ho:u9t:
sIn file included from b../arch/riscv/include/asm/io.h(:P136C:
I_../include/asm-generic/io.hI:O585B:A33S:E  warning: +performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 
(addr), b  u585f | f        e_r_,r acwo_uwnrti)t
e      b| (                                           ~~~~~~~~~~ ^v
alue, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_core.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
../include/asm-generic/io.h:595:59  : 119warning:  | performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]#d
efine outs  w595( | a        d_d_rr,a w_bwurfifetre,w (c(ouu1n6t )_ __f_ooructesw)(cPpCu_It_oI_OlBeA1S6E( v+a lu(ea)d,d rP)C,I_ IbOuBfAfSeEr ,+  caodudnr)t;)

            | |                                                       ~~~~~~~~~~ ^                                           ~~~~~~~~~~ ^

In file included from ../drivers/tty/serial/serial_core.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
../include/asm-generic/io.h  :787605 | :        59o:u twarning: sperforming pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]l
(addr, buf  f605e | r        ,_ _croauwn_tw)r;it
e      l| (        ^~~~~~~~~~~~~~~~~~~~~~~~~~(
u32 ../arch/riscv/include/asm/io.h_:_120f:o55r:c enote: )expanded from macro 'outsl'c
pu_to_le  31202 | (#vdaelue), PCI_IOBASE + faidnder outsl(addr,) ;b
u      f| f                                                      ~~~~~~~~~~ ^e
r, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/mem.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/mem.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/mem.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/char/mem.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/char/mem.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_core.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/char/mem.c:19:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/iommu/amd/built-in.a
  AR      drivers/iommu/intel/built-in.a
  AR      drivers/iommu/arm/arm-smmu/built-in.a
  AR      drivers/iommu/arm/arm-smmu-v3/built-in.a
  AR      drivers/iommu/arm/built-in.a
  AR      drivers/iommu/iommufd/built-in.a
  AR      drivers/iommu/built-in.a
  AR      drivers/gpu/host1x/built-in.a
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../drivers/tty/serial/serial_base_bus.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/char/random.o
13 warnings generated.
  CC      drivers/tty/serial/serial_ctrl.o
  AR      drivers/gpu/drm/tests/built-in.a
  AR      drivers/gpu/drm/arm/built-in.a
  AR      drivers/gpu/drm/display/built-in.a
  AR      drivers/gpu/drm/renesas/rcar-du/built-in.a
  AR      drivers/gpu/drm/renesas/rz-du/built-in.a
  AR      drivers/gpu/drm/renesas/built-in.a
  AR      drivers/gpu/drm/omapdrm/built-in.a
  AR      drivers/gpu/drm/tilcdc/built-in.a
  AR      drivers/gpu/drm/imx/built-in.a
  AR      drivers/gpu/drm/i2c/built-in.a
  AR      drivers/gpu/drm/panel/built-in.a
  AR      drivers/gpu/drm/bridge/analogix/built-in.a
  AR      drivers/gpu/drm/bridge/cadence/built-in.a
  AR      drivers/gpu/drm/bridge/imx/built-in.a
  AR      drivers/gpu/drm/bridge/synopsys/built-in.a
  AR      drivers/gpu/drm/bridge/built-in.a
13 warnings generated.
  AR      drivers/gpu/drm/hisilicon/built-in.a
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/char/random.c:39:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/gpu/drm/mxsfb/built-in.a
  AR      drivers/gpu/drm/tiny/built-in.a
  CC      drivers/tty/serial/serial_port.o
  AR      drivers/gpu/drm/xlnx/built-in.a
  AR      drivers/gpu/drm/gud/built-in.a
  AR      drivers/gpu/drm/solomon/built-in.a
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_ctrl.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/gpu/drm/built-in.a
  AR      drivers/gpu/vga/built-in.a
  AR      drivers/gpu/built-in.a
  CC      drivers/char/misc.o
13 warnings generated.
  CC      drivers/tty/serial/earlycon.o
13 warnings generated.
  AR      drivers/tty/ipwireless/built-in.a
  CC      drivers/tty/tty_io.o
In file included from ../drivers/tty/serial/earlycon.c:16:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/serial/earlycon.c:16:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/serial/earlycon.c:16:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  In file included from 548../drivers/tty/serial/earlycon.c | :        16v:
aIn file included from l../include/linux/io.h :=14 :
_In file included from _../arch/riscv/include/asm/io.hr:a136w:
_../include/asm-generic/io.hr:e752a:db2(:P Cwarning: I_performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]I
OBASE + a  d752d | r        )i;
n      s| w                          ~~~~~~~~~~ ^(
addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/earlycon.c:16:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h../include/asm-generic/io.h:760::5612::61 :warning:  performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]warning: 
performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         i  n561s | l        (vaadld r=,  _b_ulffee1r6,_ toc_ocupnut()(;_
_      l| e        ^~~~~~~~~~~~~~~~~~~~~~~~~1
6 __f../arch/riscv/include/asm/io.ho:r106c:e53)_:_ rnote: aexpanded from macro 'insl'w
_readw(PC  I106_ | I#OdBeAfSiEn e+  iandsdlr()a)d;d
r      ,|                                                          ~~~~~~~~~~ ^
buffer, cou../include/uapi/linux/byteorder/little_endian.hn:t37): 51_: _note: iexpanded from macro '__le16_to_cpu'n
sl(PCI   _37I | O#BdAeSfEi n+e  (_a_dlde1r6)_,t ob_ufcfpeur(,x )c o(u(_n_tf)o
r      c| e                                         ~~~~~~~~~~ ^ 
__u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/serial/earlycon.c:16:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsIn file included from b../drivers/tty/serial/serial_port.c(:P16C:
IIn file included from ../include/linux/serial_core.h_:I13O:
BIn file included from A../include/linux/interrupt.hS:E11 :
+In file included from  ../include/linux/hardirq.h(:a11d:
dIn file included from r./arch/riscv/include/generated/asm/hardirq.h):,1 :
bIn file included from u../include/asm-generic/hardirq.hf:f17e:
rIn file included from ,../include/linux/irq.h :c20:
oIn file included from u../include/linux/io.hn:t14):

In file included from       ../arch/riscv/include/asm/io.h| :                                           ~~~~~~~~~~ ^136:

../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)In file included from (../drivers/tty/serial/earlycon.cx:)16):

In file included from       ../include/linux/io.h| :                                                  ^14
:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from In file included from ../arch/riscv/include/asm/io.h../drivers/tty/serial/earlycon.c::13616:
:
../include/asm-generic/io.hIn file included from :../include/linux/io.h585::3314::
 In file included from warning: ../arch/riscv/include/asm/io.h:performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]136
:
../include/asm-generic/io.h:787:2: warning:   performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]585
 |         __raw_  wr787i | t        eobu(tvsall(uaed, dPrC,I _bIuOfBfAeSrE,  +c oaudndtr));;

            | |                             ~~~~~~~~~~ ^        ^~~~~~~~~~~~~~~~~~~~~~~~~~

../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/earlycon.c:16:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/serial_port.c:16:
In file included from ../include/linux/serial_core.h:13:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/char/misc.c:50:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/char/misc.c:50:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/char/misc.c:50:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/misc.c:50:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/misc.c:50:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/char/misc.c:50:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/char/misc.c:50:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/char/misc.c:50:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/char/misc.c:50:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  AR      drivers/char/built-in.a
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_io.c:75:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/tty/serial/sifive.o
  CC      drivers/base/power/sysfs.o
  AR      drivers/block/built-in.a
  AR      drivers/misc/eeprom/built-in.a
  AR      drivers/misc/cb710/built-in.a
  AR      drivers/misc/ti-st/built-in.a
  AR      drivers/misc/lis3lv02d/built-in.a
  AR      drivers/misc/cardreader/built-in.a
  AR      drivers/misc/keba/built-in.a
  AR      drivers/misc/built-in.a
  CC      drivers/base/firmware_loader/builtin/main.o
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/serial/sifive.c:35:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/base/firmware_loader/builtin/built-in.a
13 warnings generated.
  AR      drivers/base/firmware_loader/built-in.a
  CC      drivers/tty/n_tty.o
  CC      drivers/tty/tty_ioctl.o
  CC      drivers/base/power/generic_ops.o
13 warnings generated.
  AR      drivers/tty/serial/built-in.a
  CC      drivers/tty/tty_ldisc.o
In file included from ../drivers/tty/tty_ioctl.c:17:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_ioctl.c:17:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_ioctl.c:17:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ioctl.c:17:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ioctl.c:17:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ioctl.c:17:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ioctl.c:17:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ioctl.c:17:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ioctl.c:17:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldisc.c:6:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/tty/n_tty.c:46:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/n_tty.c:46:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/n_tty.c:46:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/n_tty.c:46:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/n_tty.c:46:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/n_tty.c:46:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/n_tty.c:46:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/n_tty.c:46:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/n_tty.c:46:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/power/common.o
13 warnings generated.
  CC      drivers/tty/tty_buffer.o
13 warnings generated.
  CC      drivers/base/regmap/regmap.o
13 warnings generated.
  CC      drivers/tty/tty_port.o
  CC      drivers/base/power/qos.o
In file included from ../drivers/tty/tty_buffer.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_buffer.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_buffer.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_buffer.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_buffer.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_buffer.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_buffer.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_buffer.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_buffer.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/tty/tty_mutex.o
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap.c:23:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_port.c:8:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_port.c:8:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_port.c:8:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_port.c:8:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_port.c:8:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_port.c:8:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_port.c:8:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_port.c:8:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_port.c:8:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/tty/tty_ldsem.o
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/qos.c:38:
In file included from ../include/trace/events/power.h:12:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_mutex.c:2:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_mutex.c:2:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_mutex.c:2:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
13 warnings generated.
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_mutex.c:2:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_mutex.c:2:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_mutex.c:2:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_mutex.c:2:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_mutex.c:2:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_mutex.c:2:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/regmap/regcache.o
13 warnings generated.
  CC      drivers/base/regmap/regcache-rbtree.o
13 warnings generated.
  CC      drivers/base/power/runtime.o
In file included from ../drivers/tty/tty_ldsem.c:31:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_ldsem.c:31:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_ldsem.c:31:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldsem.c:31:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldsem.c:31:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldsem.c:31:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldsem.c:31:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldsem.c:31:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ldsem.c:31:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/tty/tty_baudrate.o
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache.c:15:
In file included from ../drivers/base/regmap/trace.h:11:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-rbtree.c:15:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/base/regmap/regcache-flat.o
13 warnings generated.
  CC      drivers/base/regmap/regcache-maple.o
  CC      drivers/base/power/wakeirq.o
In file included from ../drivers/tty/tty_baudrate.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_baudrate.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_baudrate.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_baudrate.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_baudrate.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_baudrate.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_baudrate.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_baudrate.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_baudrate.c:9:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/tty/tty_jobctrl.o
In file included from ../drivers/base/regmap/regcache-flat.c:13:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/regmap/regcache-flat.c:13:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/regmap/regcache-flat.c:13:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __In file included from r../drivers/base/regmap/regcache-maple.ca:w14_:
wIn file included from ../drivers/base/regmap/internal.hr:i14:
tIn file included from e../include/linux/regmap.h:w20(:
In file included from (../include/linux/iopoll.hu:114:
6In file included from  ../include/linux/io.h:_14_:
In file included from f../arch/riscv/include/asm/io.h:o136:
r../include/asm-generic/io.hce:)548c:p31u:_ twarning: operforming pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]_
le16(value), PCI_IOBASE + addr  )548;
 |               | v                                                      ~~~~~~~~~~ ^a
l = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __for../include/asm-generic/io.hc:e)561c:61p:u _warning: tperforming pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]o
_le32(value),   P561C | I        _vIaOlB A=S E_ _+l ea1d6d_rt)o;_
cp      u| (                                                      ~~~~~~~~~~ ^(
__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/regmap/regcache-maple.c:14:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/regmap/regcache-maple.c:14:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-flat.c:13:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-flat.c:13:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../drivers/base/regmap/regcache-flat.c:13:
In file included from ../arch/riscv/include/asm/io.h../drivers/base/regmap/internal.h::10414::
53In file included from :../include/linux/regmap.h :note: 20expanded from macro 'insb':

In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
  In file included from 104../arch/riscv/include/asm/io.h | :#136d:
e../include/asm-generic/io.hf:i769n:e2 :i nwarning: sbperforming pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic](
addr, buf  fe769r | ,         ocouutnstb)( a_d_idnrs,b (bPuCfI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
fer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-maple.c:14:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-maple.c:14:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53In file included from : ../drivers/base/regmap/regcache-flat.cnote: :expanded from macro 'insl'13:

In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h  106: | 14#:
dIn file included from e../include/linux/io.hf:i14n:
eIn file included from ../arch/riscv/include/asm/io.h :i136n:
s../include/asm-generic/io.hl:(778a:d2d:r ,warning:  performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]b
uffer, cou  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: nnote: texpanded from macro 'outsw')
 __insl(P  CI_IOBASE + (addr), buffer, count)119
       | | #                                         ~~~~~~~~~~ ^d
efine outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-maple.c:14:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBAIn file included from SE../drivers/base/regmap/regcache-flat.c :+13 :
(In file included from a../drivers/base/regmap/internal.hd:d14r:
)In file included from ,../include/linux/regmap.h :b20u:
fIn file included from f../include/linux/iopoll.he:r14,:
 In file included from c../include/linux/io.ho:u14n:
tIn file included from )../arch/riscv/include/asm/io.h
:      136| :
                                           ~~~~~~~~~~ ^../include/asm-generic/io.h
:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (adIn file included from dr../drivers/base/regmap/regcache-maple.c),: 14b:
uIn file included from f../drivers/base/regmap/internal.hf:e14r:
,In file included from ../include/linux/regmap.h :c20ou:
nIn file included from t../include/linux/iopoll.h):14
:
      In file included from | ../include/linux/io.h                                           ~~~~~~~~~~ ^:
14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-maple.c:14:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-maple.c:14:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regcache-flat.c:13:
In file included from ../drivers/base/regmap/internal.h:14:
In file included from ../include/linux/regmap.h:20:
In file included from ../include/linux/iopoll.h:14:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  CC      drivers/base/regmap/regmap-mmio.o
  CC      drivers/base/power/main.o
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeirq.c:4:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/base/power/wakeup.o
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/regmap/regmap-mmio.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_jobctrl.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_jobctrl.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/tty_jobctrl.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_jobctrl.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_jobctrl.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_jobctrl.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_jobctrl.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_jobctrl.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_jobctrl.c:11:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/main.c:28:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/tty/n_null.o
13 warnings generated.
  AR      drivers/base/regmap/built-in.a
  AR      drivers/base/test/built-in.a
  CC      drivers/base/component.o
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/wakeup.c:14:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/base/power/wakeup_stats.o
In file included from ../drivers/tty/n_null.c:4:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/n_null.c:4:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/n_null.c:4:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/n_null.c:4:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/n_null.c:4:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/n_null.c:4:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/n_null.c:4:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/n_null.c:4:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/n_null.c:4:
In file included from ../include/linux/tty.h:11:
In file included from ../include/linux/tty_port.h:5:
In file included from ../include/linux/kfifo.h:40:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  CC      drivers/tty/pty.o
  CC      drivers/base/power/clock_ops.o
  CC      drivers/base/core.o
  CC      drivers/mfd/syscon.o
In file included from ../drivers/tty/pty.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/tty/pty.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/tty/pty.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/pty.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/pty.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/tty/pty.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/pty.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/pty.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/tty/pty.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/power/clock_ops.c:10:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mfd/syscon.c:15:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/base/power/built-in.a
  CC      drivers/base/bus.o
13 warnings generated.
  AR      drivers/tty/built-in.a
  AR      drivers/nfc/built-in.a
  AR      drivers/dax/hmem/built-in.a
  AR      drivers/dax/built-in.a
  AR      drivers/cxl/core/built-in.a
  AR      drivers/cxl/built-in.a
  AR      drivers/macintosh/built-in.a
  AR      drivers/scsi/built-in.a
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/core.c:12:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  AR      drivers/nvme/common/built-in.a
  AR      drivers/mfd/built-in.a
  AR      drivers/nvme/host/built-in.a
  CC      drivers/spi/spi.o
  AR      drivers/nvme/target/built-in.a
  AR      drivers/nvme/built-in.a
  AR      drivers/net/phy/qcom/built-in.a
  AR      drivers/net/phy/built-in.a
  AR      drivers/net/pse-pd/built-in.a
  AR      drivers/net/mdio/built-in.a
  AR      drivers/net/pcs/built-in.a
  AR      drivers/net/built-in.a
  AR      drivers/firewire/built-in.a
  CC      drivers/base/dd.o
  CC      drivers/base/syscore.o
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi.c:12:
In file included from ../include/linux/dmaengine.h:12:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/dd.c:22:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/base/driver.o
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/syscore.c:11:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  AR      drivers/cdrom/built-in.a
  AR      drivers/auxdisplay/built-in.a
  AR      drivers/usb/built-in.a
  AR      drivers/i2c/algos/built-in.a
  CC      drivers/i2c/busses/i2c-designware-common.o
13 warnings generated.
  AR      drivers/i2c/muxes/built-in.a
  CC      drivers/i2c/i2c-boardinfo.o
13 warnings generated.
  CC      drivers/spi/spi-dw-core.o
  CC      drivers/base/class.o
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-common.c:18:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-boardinfo.c:7:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/i2c/busses/i2c-designware-master.o
13 warnings generated.
  CC      drivers/i2c/i2c-core-base.o
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/class.c:19:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/base/platform.o
13 warnings generated.
  CC      drivers/spi/spi-dw-mmio.o
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-master.c:16:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-base.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/platform.c:15:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/i2c/busses/i2c-designware-platdrv.o
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/spi/spi-dw-mmio.c:13:
In file included from ../include/linux/spi/spi.h:17:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
13 warnings generated.
  CC      drivers/base/cpu.o
  AR      drivers/spi/built-in.a
  AR      drivers/i3c/built-in.a
13 warnings generated.
  AR      drivers/media/i2c/built-in.a
  AR      drivers/media/tuners/built-in.a
  AR      drivers/media/rc/keymaps/built-in.a
  AR      drivers/media/common/b2c2/built-in.a
  AR      drivers/media/rc/built-in.a
  AR      drivers/media/common/saa7146/built-in.a
  AR      drivers/media/platform/allegro-dvt/built-in.a
  AR      drivers/media/common/siano/built-in.a
  AR      drivers/media/common/v4l2-tpg/built-in.a
  AR      drivers/media/platform/amlogic/meson-ge2d/built-in.a
  AR      drivers/media/common/videobuf2/built-in.a
  AR      drivers/media/platform/amlogic/built-in.a
  AR      drivers/media/common/built-in.a
  AR      drivers/media/platform/amphion/built-in.a
  AR      drivers/media/platform/aspeed/built-in.a
  AR      drivers/media/pci/ttpci/built-in.a
  AR      drivers/media/pci/b2c2/built-in.a
  AR      drivers/media/platform/atmel/built-in.a
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32   AR      drivers/media/pci/pluto2/built-in.a
__force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
  AR      drivers/media/platform/broadcom/built-in.a
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/busses/i2c-designware-platdrv.c:17:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/pci/dm1105/built-in.a
  AR      drivers/media/platform/cadence/built-in.a
  AR      drivers/media/pci/pt1/built-in.a
  AR      drivers/media/platform/chips-media/coda/built-in.a
  AR      drivers/media/pci/pt3/built-in.a
  AR      drivers/media/platform/chips-media/wave5/built-in.a
  AR      drivers/media/pci/mantis/built-in.a
  AR      drivers/media/platform/chips-media/built-in.a
  AR      drivers/media/pci/ngene/built-in.a
  AR      drivers/media/platform/imagination/built-in.a
  AR      drivers/media/pci/ddbridge/built-in.a
  AR      drivers/media/platform/intel/built-in.a
  AR      drivers/media/pci/saa7146/built-in.a
  AR      drivers/media/platform/marvell/built-in.a
  AR      drivers/media/pci/smipcie/built-in.a
13 warnings generated.
  AR      drivers/media/platform/mediatek/jpeg/built-in.a
  AR      drivers/media/pci/netup_unidvb/built-in.a
  AR      drivers/i2c/busses/built-in.a
  AR      drivers/media/platform/mediatek/mdp/built-in.a
  AR      drivers/media/pci/intel/ipu3/built-in.a
  CC      drivers/i2c/i2c-core-smbus.o
  AR      drivers/media/platform/mediatek/vcodec/common/built-in.a
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AR      drivers/media/pci/intel/ivsc/built-in.a
  AR      drivers/media/platform/mediatek/vcodec/encoder/built-in.a
In file included from ../drivers/base/cpu.c:20:
In file included from ../include/linux/tick.h:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/pci/intel/built-in.a
  AR      drivers/media/platform/mediatek/vcodec/decoder/built-in.a
  AR      drivers/media/pci/built-in.a
  AR      drivers/media/platform/mediatek/vcodec/built-in.a
  AR      drivers/media/platform/microchip/built-in.a
  AR      drivers/media/platform/mediatek/vpu/built-in.a
  AR      drivers/media/platform/nuvoton/built-in.a
  AR      drivers/media/platform/mediatek/mdp3/built-in.a
  AR      drivers/media/platform/mediatek/built-in.a
  AR      drivers/media/platform/nvidia/tegra-vde/built-in.a
13 warnings generated.
  CC      drivers/i2c/i2c-core-of.o
  AR      drivers/media/platform/nvidia/built-in.a
  CC      drivers/base/firmware.o
  AR      drivers/media/platform/nxp/dw100/built-in.a
  AR      drivers/media/platform/nxp/imx-jpeg/built-in.a
  AR      drivers/media/platform/nxp/imx8-isi/built-in.a
  AR      drivers/media/platform/nxp/built-in.a
  AR      drivers/media/platform/qcom/camss/built-in.a
  AR      drivers/media/platform/qcom/venus/built-in.a
  AR      drivers/media/platform/qcom/built-in.a
  AR      drivers/media/platform/raspberrypi/pisp_be/built-in.a
  AR      drivers/media/platform/raspberrypi/built-in.a
  AR      drivers/media/platform/renesas/rcar-vin/built-in.a
  AR      drivers/media/platform/renesas/rzg2l-cru/built-in.a
  AR      drivers/media/platform/renesas/vsp1/built-in.a
  AR      drivers/media/platform/renesas/built-in.a
  AR      drivers/media/platform/rockchip/rga/built-in.a
  AR      drivers/media/platform/rockchip/rkisp1/built-in.a
  AR      drivers/media/platform/rockchip/built-in.a
  AR      drivers/media/platform/samsung/exynos-gsc/built-in.a
  AR      drivers/media/platform/samsung/exynos4-is/built-in.a
  AR      drivers/media/platform/samsung/s3c-camif/built-in.a
  AR      drivers/media/platform/samsung/s5p-g2d/built-in.a
  AR      drivers/media/platform/samsung/s5p-jpeg/built-in.a
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-smbus.c:15:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/platform/samsung/s5p-mfc/built-in.a
  CC      drivers/base/init.o
  AR      drivers/media/platform/samsung/built-in.a
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AR      drivers/media/platform/st/sti/bdisp/built-in.a
In file included from ../drivers/i2c/i2c-core-of.c:14:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/platform/st/sti/c8sectpfe/built-in.a
  AR      drivers/media/platform/st/sti/delta/built-in.a
  AR      drivers/media/platform/st/sti/hva/built-in.a
  AR      drivers/media/platform/st/stm32/built-in.a
  AR      drivers/media/platform/st/built-in.a
  AR      drivers/media/platform/sunxi/sun4i-csi/built-in.a
13 warnings generated.
  AR      drivers/media/platform/sunxi/sun6i-csi/built-in.a
  AR      drivers/media/platform/sunxi/sun6i-mipi-csi2/built-in.a
  AR      drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/built-in.a
13 warnings generated.
  CC      drivers/i2c/i2c-dev.o
  AR      drivers/media/platform/sunxi/sun8i-di/built-in.a
  AR      drivers/media/platform/sunxi/sun8i-rotate/built-in.a
  AR      drivers/media/platform/sunxi/built-in.a
  AR      drivers/media/platform/ti/am437x/built-in.a
  AR      drivers/media/platform/verisilicon/built-in.a
  AR      drivers/media/platform/ti/cal/built-in.a
  AR      drivers/media/platform/via/built-in.a
  AR      drivers/media/platform/ti/vpe/built-in.a
  AR      drivers/media/platform/ti/davinci/built-in.a
  AR      drivers/media/usb/b2c2/built-in.a
  AR      drivers/media/usb/dvb-usb/built-in.a
  AR      drivers/media/platform/ti/j721e-csi2rx/built-in.a
  AR      drivers/media/platform/ti/omap/built-in.a
  AR      drivers/media/usb/dvb-usb-v2/built-in.a
  AR      drivers/media/platform/ti/omap3isp/built-in.a
  AR      drivers/media/usb/s2255/built-in.a
  AR      drivers/media/platform/ti/built-in.a
  AR      drivers/media/usb/siano/built-in.a
  AR      drivers/media/platform/xilinx/built-in.a
  AR      drivers/media/usb/ttusb-budget/built-in.a
  AR      drivers/media/platform/built-in.a
  AR      drivers/media/usb/ttusb-dec/built-in.a
  AR      drivers/media/usb/built-in.a
  AR      drivers/media/mmc/siano/built-in.a
  AR      drivers/media/mmc/built-in.a
  AR      drivers/media/firewire/built-in.a
  AR      drivers/media/spi/built-in.a
  AR      drivers/media/test-drivers/built-in.a
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/init.c:11:
In file included from ../include/linux/backing-dev.h:16:
In file included from ../include/linux/writeback.h:13:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/built-in.a
  AR      drivers/ptp/built-in.a
  CC      drivers/power/reset/syscon-reboot.o
  CC      drivers/mmc/core/core.o
13 warnings generated.
  CC      drivers/base/map.o
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/i2c/i2c-dev.c:24:
In file included from ../include/linux/i2c.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/power/reset/syscon-reboot.c:9:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../drivers/mmc/core/core.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/core.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/core.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/core.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/core.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/core.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/core.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/core.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AR      drivers/i2c/built-in.a
In file included from ../drivers/mmc/core/core.c:12:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/devres.o
13 warnings generated.
  AR      drivers/power/reset/built-in.a
  AR      drivers/power/built-in.a
  AR      drivers/ufs/built-in.a
  CC      drivers/mmc/host/mmc_spi.o
  AR      drivers/firmware/arm_ffa/built-in.a
  AR      drivers/firmware/arm_scmi/built-in.a
  AR      drivers/firmware/broadcom/built-in.a
  AR      drivers/firmware/cirrus/built-in.a
  AR      drivers/firmware/meson/built-in.a
  AR      drivers/firmware/microchip/built-in.a
  AR      drivers/firmware/efi/built-in.a
  AR      drivers/firmware/imx/built-in.a
  AR      drivers/firmware/psci/built-in.a
  AR      drivers/firmware/qcom/built-in.a
  AR      drivers/firmware/smccc/built-in.a
  AR      drivers/firmware/tegra/built-in.a
  AR      drivers/firmware/xilinx/built-in.a
  AR      drivers/firmware/built-in.a
13 warnings generated.
  CC      drivers/clocksource/timer-of.o
  CC      drivers/mmc/core/bus.o
In file included from ../drivers/mmc/host/mmc_spi.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/host/mmc_spi.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/host/mmc_spi.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/host/mmc_spi.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/host/mmc_spi.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/host/mmc_spi.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/host/mmc_spi.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/host/mmc_spi.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/host/mmc_spi.c:17:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/attribute_container.o
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-of.c:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/mmc/host/of_mmc_spi.o
13 warnings generated.
  CC      drivers/clocksource/timer-probe.o
In file included from ../drivers/mmc/core/bus.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/bus.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/bus.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/bus.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/bus.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/bus.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/bus.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/bus.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/bus.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/mmc/core/host.o
  CC      drivers/base/transport_class.o
In file included from ../drivers/mmc/host/of_mmc_spi.c:14:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/host/of_mmc_spi.c:14:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/host/of_mmc_spi.c:14:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/host/of_mmc_spi.c:14:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/host/of_mmc_spi.c:14:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/host/of_mmc_spi.c:14:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/host/of_mmc_spi.c:14:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/host/of_mmc_spi.c:14:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/host/of_mmc_spi.c:14:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-probe.c:9:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/clocksource/dummy_timer.o
13 warnings generated.
  AR      drivers/mmc/host/built-in.a
  CC      drivers/mmc/core/mmc.o
In file included from ../drivers/mmc/core/host.c:16:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/host.c:16:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/host.c:16:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/host.c:16:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/host.c:16:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/host.c:16:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/host.c:16:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/host.c:16:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/host.c:16:
In file included from ../include/linux/pagemap.h:11:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/topology.o
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/dummy_timer.c:8:
In file included from ../include/linux/clockchips.h:14:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/mmc/core/mmc_ops.o
13 warnings generated.
  CC      drivers/clocksource/timer-clint.o
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/topology.c:14:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../drivers/mmc/core/mmc.c:18:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/mmc.c:18:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/mmc.c:18:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/mmc.c:18:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/mmc.c:18:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/mmc.c:18:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/mmc.c:18:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/mmc.c:18:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/mmc.c:18:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/container.o
In file included from ../drivers/mmc/core/mmc_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/mmc_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/mmc_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/mmc_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/mmc_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/mmc_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/mmc_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/mmc_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/mmc_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/clocksource/timer-clint.c:11:
In file included from ../include/linux/clocksource.h:22:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/base/property.o
  CC      drivers/base/cacheinfo.o
13 warnings generated.
  CC      drivers/mmc/core/sd.o
13 warnings generated.
  AR      drivers/clocksource/built-in.a
  CC      drivers/of/base.o
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/property.c:16:
In file included from ../include/linux/phy.h:16:
In file included from ../include/linux/ethtool.h:18:
In file included from ../include/linux/if_ether.h:19:
In file included from ../include/linux/skbuff.h:17:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sd.c:16:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sd.c:16:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sd.c:16:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sd.c:16:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sd.c:16:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sd.c:16:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sd.c:16:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sd.c:16:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sd.c:16:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/base/swnode.o
  CC      drivers/base/devtmpfs.o
  CC      drivers/of/cpu.o
13 warnings generated.
  CC      drivers/mmc/core/sd_ops.o
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:93:
In file included from ../include/trace/syscall.h:7:
In file included from ../include/linux/trace_events.h:9:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/mmc/core/sdio.o
  CC      drivers/of/device.o
13 warnings generated.
  CC      drivers/base/pinctrl.o
In file included from ../drivers/mmc/core/sd_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sd_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sd_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sd_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sd_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sd_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sd_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sd_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sd_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/mmc/core/sdio_ops.o
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/device.c:5:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio.c:12:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sdio.c:12:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sdio.c:12:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio.c:12:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio.c:12:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio.c:12:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio.c:12:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio.c:12:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio.c:12:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/base/platform-msi.o
  CC      drivers/of/module.o
13 warnings generated.
  CC      drivers/mmc/core/sdio_bus.o
In file included from ../drivers/mmc/core/sdio_ops.c:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sdio_ops.c:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sdio_ops.c:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_ops.c:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_ops.c:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_ops.c:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_ops.c:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_ops.c:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_ops.c:8:
In file included from ../include/linux/scatterlist.h:9:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/mmc/core/sdio_cis.o
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/base/platform-msi.c:12:
In file included from ../include/linux/msi.h:24:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/of/platform.o
13 warnings generated.
  CC      drivers/base/arch_topology.o
In file included from ../drivers/mmc/core/sdio_bus.c:20:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sdio_bus.c:20:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sdio_bus.c:20:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_bus.c:20:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_bus.c:20:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_bus.c:20:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_bus.c:20:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_bus.c:20:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_bus.c:20:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/mmc/core/sdio_io.o
In file included from ../drivers/mmc/core/sdio_cis.c:15:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sdio_cis.c:15:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sdio_cis.c:15:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_cis.c:15:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_cis.c:15:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_cis.c:15:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_cis.c:15:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_cis.c:15:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_cis.c:15:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/platform.c:14:
In file included from ../include/linux/amba/bus.h:19:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/mmc/core/sdio_irq.o
13 warnings generated.
  CC      drivers/of/property.o
  AR      drivers/base/built-in.a
  CC      drivers/of/kobj.o
In file included from ../drivers/mmc/core/sdio_io.c:10:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sdio_io.c:10:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sdio_io.c:10:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_io.c:10:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_io.c:10:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_io.c:10:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_io.c:10:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_io.c:10:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_io.c:10:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/mmc/core/slot-gpio.o
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/property.c:25:
In file included from ../include/linux/of_address.h:7:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_irq.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sdio_irq.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/sdio_irq.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_irq.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_irq.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_irq.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_irq.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_irq.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/sdio_irq.c:21:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/of/fdt.o
13 warnings generated.
  CC      drivers/mmc/core/regulator.o
In file included from ../drivers/mmc/core/slot-gpio.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/slot-gpio.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/slot-gpio.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/slot-gpio.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/slot-gpio.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/slot-gpio.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/slot-gpio.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/slot-gpio.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/slot-gpio.c:10:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  DTC     drivers/of/empty_root.dtb
  CC      drivers/mmc/core/pwrseq.o
13 warnings generated.
  AR      drivers/platform/built-in.a
  AR      drivers/hwtracing/intel_th/built-in.a
  AR      drivers/android/built-in.a
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      drivers/of/fdt_address.o
In file included from ../drivers/of/fdt.c:12:
In file included from ../include/linux/crash_dump.h:5:
In file included from ../include/linux/kexec.h:20:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/regulator.c:9:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/regulator.c:9:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/regulator.c:9:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/regulator.c:9:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/regulator.c:9:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/regulator.c:9:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/regulator.c:9:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/regulator.c:9:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/regulator.c:9:
In file included from ../include/linux/regulator/consumer.h:35:
In file included from ../include/linux/suspend.h:5:
In file included from ../include/linux/swap.h:9:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/mmc/core/block.o
13 warnings generated.
  CC      drivers/of/address.o
In file included from ../drivers/mmc/core/pwrseq.c:14:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/pwrseq.c:14:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/pwrseq.c:14:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/pwrseq.c:14:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/pwrseq.c:14:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/pwrseq.c:14:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/pwrseq.c:14:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/pwrseq.c:14:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      drivers/of/irq.o
In file included from ../drivers/mmc/core/pwrseq.c:14:
In file included from ../include/linux/mmc/host.h:19:
In file included from ../include/linux/blk-crypto-profile.h:9:
In file included from ../include/linux/bio.h:10:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
  CC      drivers/mmc/core/queue.o
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/address.c:6:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/block.c:32:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/block.c:32:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/block.c:32:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/block.c:32:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/block.c:32:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/block.c:32:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/block.c:32:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/block.c:32:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/block.c:32:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/of/irq.c:24:
In file included from ../include/linux/of_irq.h:7:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
13 warnings generated.
In file included from ../drivers/mmc/core/queue.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  548 |         val = __raw_readb(PCI_IOBASE + addr);
      |                           ~~~~~~~~~~ ^
../include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  561 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
   37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/queue.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  574 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
      |                                                         ~~~~~~~~~~ ^
../include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
   35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
      |                                                   ^
In file included from ../drivers/mmc/core/queue.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  585 |         __raw_writeb(value, PCI_IOBASE + addr);
      |                             ~~~~~~~~~~ ^
../include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  595 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  605 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
      |                                                       ~~~~~~~~~~ ^
../include/asm-generic/io.h:744:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  744 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/queue.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:752:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  752 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/queue.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  760 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
  106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/queue.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  769 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/queue.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  778 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/queue.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  787 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
In file included from ../drivers/mmc/core/queue.c:8:
In file included from ../include/linux/blkdev.h:9:
In file included from ../include/linux/blk_types.h:10:
In file included from ../include/linux/bvec.h:10:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/of/of_reserved_mem.o
13 warnings generated.
  WRAP    drivers/of/empty_root.dtb.S
  AS      drivers/of/empty_root.dtb.o
13 warnings generated.
13 warnings generated.
  AR      drivers/mmc/core/built-in.a
  AR      drivers/mmc/built-in.a
  AR      drivers/of/built-in.a
  AR      drivers/built-in.a
  AR      built-in.a
  AR      vmlinux.a
  LD      vmlinux.o
  OBJCOPY modules.builtin.modinfo
  GEN     modules.builtin
  MODPOST vmlinux.symvers
  UPD     include/generated/utsversion.h
  CC      init/version-timestamp.o
  LD      vmlinux
  NM      System.map
  OBJCOPY arch/riscv/boot/Image
  Kernel: arch/riscv/boot/Image is ready
  AS      arch/riscv/boot/loader.o
  LDS     arch/riscv/boot/loader.lds
  Kernel: arch/riscv/boot/loader is ready
  OBJCOPY arch/riscv/boot/loader.bin
  Kernel: arch/riscv/boot/loader.bin is ready
make[1]: Leaving directory '/tmp/kci/linux/build'
make: Leaving directory '/tmp/kci/linux'