#
# 2024-11-14T07:01:13.930936
#
# 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/fcntl.h
  WRAP    arch/riscv/include/generated/uapi/asm/ioctl.h
  WRAP    arch/riscv/include/generated/uapi/asm/ioctls.h
  UPD     include/generated/uapi/linux/version.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
  WRAP    arch/riscv/include/generated/uapi/asm/poll.h
  UPD     include/config/kernel.release
  UPD     include/generated/compile.h
  WRAP    arch/riscv/include/generated/uapi/asm/posix_types.h
  HOSTCC  scripts/dtc/dtc.o
  WRAP    arch/riscv/include/generated/uapi/asm/resource.h
  WRAP    arch/riscv/include/generated/uapi/asm/sembuf.h
  HOSTCC  scripts/dtc/flattree.o
  WRAP    arch/riscv/include/generated/uapi/asm/shmbuf.h
  WRAP    arch/riscv/include/generated/uapi/asm/siginfo.h
  WRAP    arch/riscv/include/generated/uapi/asm/signal.h
  WRAP    arch/riscv/include/generated/uapi/asm/socket.h
  UPD     include/generated/utsrelease.h
  WRAP    arch/riscv/include/generated/uapi/asm/sockios.h
  WRAP    arch/riscv/include/generated/uapi/asm/stat.h
  WRAP    arch/riscv/include/generated/uapi/asm/statfs.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
  HOSTCC  scripts/dtc/fstree.o
  WRAP    arch/riscv/include/generated/uapi/asm/types.h
  SYSHDR  arch/riscv/include/generated/uapi/asm/unistd_32.h
  SYSHDR  arch/riscv/include/generated/uapi/asm/unistd_64.h
  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
  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/mcs_spinlock.h
  WRAP    arch/riscv/include/generated/asm/parport.h
  WRAP    arch/riscv/include/generated/asm/spinlock_types.h
  WRAP    arch/riscv/include/generated/asm/ticket_spinlock.h
  WRAP    arch/riscv/include/generated/asm/qrwlock.h
  WRAP    arch/riscv/include/generated/asm/qrwlock_types.h
  WRAP    arch/riscv/include/generated/asm/qspinlock.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
  HOSTCC  scripts/dtc/libfdt/fdt_sw.o
  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/vga.h
  WRAP    arch/riscv/include/generated/asm/video.h
  SYSTBL  arch/riscv/include/generated/asm/syscall_table_32.h
  HOSTCC  scripts/dtc/libfdt/fdt_rw.o
  SYSTBL  arch/riscv/include/generated/asm/syscall_table_64.h
  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
  HOSTLD  scripts/dtc/fdtoverlay
  HOSTLD  scripts/dtc/dtc
  CC      scripts/mod/empty.o
  DTC     arch/riscv/boot/dts/canaan/canaan_kd233.dtb
  DTC     arch/riscv/boot/dts/canaan/k210_generic.dtb
  HOSTCC  scripts/mod/mk_elfconfig
  DTC     arch/riscv/boot/dts/canaan/sipeed_maix_bit.dtb
  DTC     arch/riscv/boot/dts/canaan/sipeed_maix_dock.dtb
  CC      scripts/mod/devicetable-offsets.s
  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:10:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:10:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:10:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:10:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:10:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:10:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:10:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  UPD     include/generated/asm-offsets.h
  CALL    ../scripts/checksyscalls.sh
  AR      usr/built-in.a
  CC      init/main.o
  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
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/pi/cmdline_early.o
  CC      arch/riscv/kernel/pi/fdt_early.o
7 warnings generated.
  CC      arch/riscv/kernel/pi/string.o
  UPD     init/utsversion-tmp.h
  CC      init/do_mounts.o
7 warnings generated.
  CC      arch/riscv/kernel/pi/ctype.o
  CC      mm/mempool.o
  CC      arch/riscv/kernel/pi/lib-fdt.o
  CC      arch/riscv/kernel/pi/lib-fdt_ro.o
7 warnings generated.
  CC      kernel/sched/fair.o
  CC      arch/riscv/kernel/pi/archrandom_early.o
  OBJCOPY arch/riscv/kernel/pi/cmdline_early.pi.o
In file included from ../init/do_mounts.c:7:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:7:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:7:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:7:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:7:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:7:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:7:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  OBJCOPY arch/riscv/kernel/pi/fdt_early.pi.o
  OBJCOPY arch/riscv/kernel/pi/string.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  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
  OBJCOPY arch/riscv/kernel/pi/archrandom_early.pi.o
  AR      arch/riscv/kernel/pi/built-in.a
  LDS     arch/riscv/kernel/vmlinux.lds
7 warnings generated.
  AS      arch/riscv/kernel/head.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/soc.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/alternative.o
7 warnings generated.
  CC      init/noinitramfs.o
7 warnings generated.
  CC      mm/fadvise.o
In file included from ../init/noinitramfs.c:11:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      arch/riscv/kernel/cpu.o
  CC      init/calibrate.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/maccess.o
  CC      init/init_task.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/cpufeature.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      mm/page-writeback.o
  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
  AR      fs/notify/built-in.a
  CC      fs/iomap/trace.o
  AS      arch/riscv/kernel/entry.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      kernel/sched/build_utility.o
  CC      fs/iomap/iter.o
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      mm/folio-compat.o
7 warnings generated.
  CC      arch/riscv/kernel/process.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
7 warnings generated.
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/iomap/buffered-io.o
7 warnings generated.
  CC      mm/readahead.o
In file included from ../arch/riscv/kernel/process.c:16:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:16:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:16:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:16:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:16:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:16:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:16:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      kernel/sched/built-in.a
  CC      kernel/locking/mutex.o
7 warnings generated.
  CC      mm/swap.o
  CC      arch/riscv/kernel/reset.o
7 warnings generated.
  CC      fs/iomap/direct-io.o
  CC      arch/riscv/kernel/return_address.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/locking/semaphore.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      mm/truncate.o
  CC      arch/riscv/kernel/setup.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/iomap/fiemap.o
7 warnings generated.
  CC      kernel/locking/rwsem.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      arch/riscv/kernel/signal.o
7 warnings generated.
7 warnings generated.
  CC      fs/iomap/seek.o
  CC      mm/vmscan.o
  CC      kernel/locking/percpu-rwsem.o
In file included from ../arch/riscv/kernel/signal.c:12:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      fs/iomap/built-in.a
7 warnings generated.
  AR      fs/quota/built-in.a
  CC      arch/riscv/kernel/syscall_table.o
  CC      fs/proc/nommu.o
  CC      kernel/locking/spinlock.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/shrinker.o
In file included from ../arch/riscv/kernel/syscall_table.c:8:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/proc/task_nommu.o
7 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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/locking/osq_lock.o
7 warnings generated.
  CC      fs/proc/inode.o
  CC      mm/shmem.o
In file included from ../arch/riscv/kernel/sys_riscv.c:8:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/locking/rtmutex_api.o
7 warnings generated.
  CC      arch/riscv/kernel/sys_hwprobe.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/proc/root.o
7 warnings generated.
  CC      mm/util.o
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/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/locking/qrwlock.o
In file included from ../arch/riscv/kernel/sys_hwprobe.c:7:
In file included from ../include/linux/syscalls.h:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      arch/riscv/kernel/time.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  AR      kernel/locking/built-in.a
  CC      fs/proc/base.o
  CC      kernel/power/qos.o
7 warnings generated.
  CC      mm/mmzone.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      arch/riscv/kernel/traps.o
In file included from ../fs/proc/base.c:67:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:67:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:67:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:67:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:67:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:67:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:67:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      mm/vmstat.o
7 warnings generated.
  CC      kernel/power/main.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/proc/generic.o
7 warnings generated.
  CC      arch/riscv/kernel/riscv_ksyms.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/stacktrace.o
7 warnings generated.
  CC      kernel/power/process.o
7 warnings generated.
  CC      mm/backing-dev.o
  CC      fs/proc/array.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      arch/riscv/kernel/cacheinfo.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/power/suspend.o
7 warnings generated.
  CC      mm/mm_init.o
7 warnings generated.
  CC      fs/proc/fd.o
  CC      arch/riscv/kernel/patch.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      kernel/power/built-in.a
  CC      kernel/printk/printk.o
  CC      arch/riscv/kernel/vendor_extensions.o
7 warnings generated.
  CC      fs/proc/proc_tty.o
7 warnings generated.
  CC      mm/percpu.o
  CC      arch/riscv/kernel/traps_misaligned.o
In file included from ../kernel/printk/printk.c:29:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:29:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:29:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:29:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:29:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:29:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:29:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/proc/cmdline.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      arch/riscv/kernel/unaligned_access_speed.o
  CC      fs/proc/consoles.o
7 warnings generated.
  CC      kernel/printk/printk_safe.o
7 warnings generated.
  CC      mm/slab_common.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AS      arch/riscv/kernel/copy-unaligned.o
  AS      arch/riscv/kernel/vec-copy-unaligned.o
  CC      fs/proc/cpuinfo.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AS      arch/riscv/kernel/fpu.o
7 warnings generated.
  CC      arch/riscv/kernel/kernel_mode_fpu.o
  CC      kernel/printk/nbcon.o
7 warnings generated.
  CC      mm/compaction.o
  CC      arch/riscv/kernel/vector.o
  CC      fs/proc/devices.o
  CC      kernel/printk/printk_ringbuffer.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/kernel_mode_vector.o
7 warnings generated.
  CC      mm/show_mem.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/printk/sysctl.o
7 warnings generated.
  CC      arch/riscv/kernel/smpboot.o
  CC      fs/proc/interrupts.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      kernel/printk/built-in.a
  CC      kernel/irq/irqdesc.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/interval_tree.o
  CC      fs/proc/loadavg.o
7 warnings generated.
  CC      arch/riscv/kernel/smp.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/proc/meminfo.o
7 warnings generated.
  CC      kernel/irq/handle.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      mm/list_lru.o
7 warnings generated.
  CC      arch/riscv/kernel/cpu_ops.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      fs/proc/stat.o
  CC      kernel/irq/manage.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/cpu_ops_spinwait.o
7 warnings generated.
  CC      mm/workingset.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AS      arch/riscv/kernel/suspend_entry.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/kernel/suspend.o
7 warnings generated.
  CC      fs/proc/uptime.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/irq/spurious.o
7 warnings generated.
  CC      mm/debug.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      arch/riscv/kernel/perf_regs.o
7 warnings generated.
  CC      fs/proc/util.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/proc/version.o
7 warnings generated.
  CC      mm/gup.o
7 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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/irq/chip.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/proc/softirqs.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      arch/riscv/kernel/built-in.a
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      arch/riscv/mm/init.o
7 warnings generated.
  CC      mm/mmap_lock.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/proc/namespaces.o
7 warnings generated.
  CC      kernel/irq/dummychip.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      arch/riscv/mm/cacheflush.o
7 warnings generated.
  CC      mm/nommu.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      kernel/irq/devres.o
  CC      fs/proc/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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/proc/thread_self.o
7 warnings generated.
7 warnings generated.
  CC      kernel/irq/irqdomain.o
  CC      mm/page_alloc.o
  CC      arch/riscv/mm/pmem.o
  CC      fs/proc/proc_sysctl.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      arch/riscv/mm/built-in.a
  AR      arch/riscv/net/built-in.a
7 warnings generated.
  WRAP    arch/riscv/boot/dts/canaan/k210_generic.dtb.S
  AS      arch/riscv/boot/dts/canaan/k210_generic.dtb.o
  CC      kernel/irq/proc.o
  AR      arch/riscv/boot/dts/built-in.a
  AR      arch/riscv/errata/built-in.a
  CC      arch/riscv/purgatory/purgatory.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/irq/cpuhotplug.o
7 warnings generated.
7 warnings generated.
  CC      mm/page_frag_cache.o
  CC      fs/proc/kmsg.o
  AS      arch/riscv/purgatory/entry.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      fs/proc/built-in.a
In file included from ../mm/page_frag_cache.c:21:
In file included from ../mm/internal.h:13:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_frag_cache.c:21:
In file included from ../mm/internal.h:13:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_frag_cache.c:21:
In file included from ../mm/internal.h:13:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_frag_cache.c:21:
In file included from ../mm/internal.h:13:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_frag_cache.c:21:
In file included from ../mm/internal.h:13:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_frag_cache.c:21:
In file included from ../mm/internal.h:13:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/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/mount.o
  AS      arch/riscv/purgatory/strcmp.o
In file included from ../mm/page_frag_cache.c:21:
In file included from ../mm/internal.h:13:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AS      arch/riscv/purgatory/strlen.o
  CC      kernel/irq/pm.o
7 warnings generated.
  AS      arch/riscv/purgatory/strncmp.o
  CC      mm/init-mm.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
  AR      ipc/built-in.a
  CC      security/commoncap.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      mm/memblock.o
  CC      fs/kernfs/inode.o
7 warnings generated.
  CC      kernel/irq/msi.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addIn file included from r,../mm/memblock.c :b21u:
fIn file included from f../include/linux/io.he:r14,:
 In file included from c../arch/riscv/include/asm/io.ho:u136:
n../include/asm-generic/io.ht);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
:804:../arch/riscv/include/asm/io.h2::120 :warning: 55performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]:
 note: expanded from macro 'outsl'
  120 | #define outsl(ad  d804r | ,         biunfsfbe(r,a dcodurn,t )b u_f_foeurt,s lc(oPuCnIt_)I;O
B      A| S        ^~~~~~~~~~~~~~~~~~~~~~~~~E
 + (a../arch/riscv/include/asm/io.hd:d104r:)53,:  bnote: uexpanded from macro 'insb'f
fer, coun  t104) | 
#      d| e                                           ~~~~~~~~~~ ^fi
ne 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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      security/built-in.a
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/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/irq/ipi.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/kernfs/dir.o
7 warnings generated.
  CC      kernel/irq/ipi-mux.o
7 warnings generated.
  CC      mm/slub.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/irq/affinity.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      crypto/built-in.a
  CC      mm/dmapool.o
  CC      fs/kernfs/file.o
7 warnings generated.
  CC      kernel/irq/matrix.o
7 warnings generated.
  CC      mm/early_ioremap.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../mm/dmapool.c:23:
In file included from ../include/linux/dma-mapping.h: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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/rcu/update.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/kernfs/symlink.o
7 warnings generated.
  AR      kernel/irq/built-in.a
  AR      kernel/livepatch/built-in.a
  CC      block/partitions/core.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      mm/built-in.a
  CC      block/bdev.o
7 warnings generated.
  CC      kernel/rcu/sync.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      fs/kernfs/built-in.a
  CC      kernel/rcu/srcutree.o
  CC      fs/sysfs/file.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      block/partitions/msdos.o
7 warnings generated.
  CC      block/partitions/efi.o
  CC      fs/sysfs/dir.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/rcu/tree.o
7 warnings generated.
  CC      fs/sysfs/symlink.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/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/sysfs/mount.o
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      block/partitions/built-in.a
  CC      block/fops.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/sysfs/group.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/devpts/inode.o
7 warnings generated.
  CC      block/bio.o
  AR      fs/sysfs/built-in.a
  CC      block/elevator.o
  AR      fs/devpts/built-in.a
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/ext2/balloc.o
7 warnings generated.
  CC      kernel/rcu/rcu_segcblist.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      block/blk-core.o
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      block/blk-sysfs.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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 ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  AR      kernel/rcu/built-in.a
  CC      fs/ext2/dir.o
  CC      kernel/dma/mapping.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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 ../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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      block/blk-flush.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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: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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
7 warnings generated.
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: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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      block/blk-settings.o
7 warnings generated.
7 warnings generated.
  CC      kernel/dma/direct.o
  CC      fs/ext2/file.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      block/blk-ioc.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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: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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h: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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h: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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h: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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h: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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/direct.c:10:
In file included from ../include/linux/dma-map-ops.h:9:
In file included from ../include/linux/dma-mapping.h: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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      block/blk-map.o
7 warnings generated.
7 warnings generated.
  CC      kernel/dma/coherent.o
  CC      fs/ext2/ialloc.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:12In file included from :
In file included from ../block/blk-map.c../include/linux/hardirq.h::811:
:
In file included from In file included from ../include/linux/bio.h./arch/riscv/include/generated/asm/hardirq.h::101:
:
In file included from In file included from ../include/linux/blk_types.h../include/asm-generic/hardirq.h::1017:
:
In file included from In file included from ../include/linux/bvec.h../include/linux/irq.h::1020:
:
In file included from In file included from ../include/linux/highmem.h../include/linux/io.h::1214:
:
In file included from In file included from ../include/linux/hardirq.h../arch/riscv/include/asm/io.h::11136:
:
In file included from ../include/asm-generic/io.h./arch/riscv/include/generated/asm/hardirq.h::1804:
:In file included from 2../include/asm-generic/hardirq.h:: 17warning: :
In file included from performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]../include/linux/irq.h
:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         i  n829s | b        (oaudtdsrb,( abdudfrf,e rb,u fcfoeurn,t )c;o
u      n| t        ^~~~~~~~~~~~~~~~~~~~~~~~~)
;
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~../arch/riscv/include/asm/io.h
:104:../arch/riscv/include/asm/io.h53::118 :note: 55expanded from macro 'insb':
 note: expanded from macro 'outsb'
  104 |   #118d | e#fdienfei nien sobu(tasdbd(ra,d dbru,f fbeurf,f ecro,u ncto)u n_t_)i n_s_bo(uPtCsIb_(IPOCBIA_SIEO B+A S(Ea d+d r()a,d dbru)f,f ebru,f fceoru,n tc)o
u      n| t                                         ~~~~~~~~~~ ^)

      |                                            ~~~~~~~~~~ ^
In file included from In file included from ../block/blk-map.c../fs/ext2/ialloc.c::818:
:
In file included from In file included from ../include/linux/bio.h../include/linux/backing-dev.h::1610:
:
In file included from In file included from ../include/linux/writeback.h../include/linux/blk_types.h::1310:
:
In file included from In file included from ../include/linux/blk_types.h../include/linux/bvec.h::1010:
:
In file included from In file included from ../include/linux/bvec.h../include/linux/highmem.h::1012:
:
In file included from In file included from ../include/linux/highmem.h../include/linux/hardirq.h::1211:
:
In file included from In file included from ../include/linux/hardirq.h./arch/riscv/include/generated/asm/hardirq.h::111:
:
In file included from In file included from ./arch/riscv/include/generated/asm/hardirq.h../include/asm-generic/hardirq.h::117:
:
In file included from In file included from ../include/asm-generic/hardirq.h../include/linux/irq.h::1720:
:
In file included from ../include/linux/irq.hIn file included from :../include/linux/io.h20::
14In file included from :
../include/linux/io.hIn file included from :../arch/riscv/include/asm/io.h14::
136In file included from :
../arch/riscv/include/asm/io.h../include/asm-generic/io.h::136838:
:../include/asm-generic/io.h2::812 :warning: 2performing 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]
  838   | 812         | o        uitnssww((aaddddrr,,  bbuuffffeerr,,  ccoouunntt));;

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

../arch/riscv/include/asm/io.h../arch/riscv/include/asm/io.h::119105::5553::  note: note: expanded from macro 'insw'expanded from macro 'outsw'

    105119 |  | ##ddeeffiinnee  ionustws(wa(daddrd,r ,b ubfufer, counft)f e_r_,i ncsowu(nPtC)I __I_OoBuAtSsEw (+P C(Ia_dIdOrB)A,S Eb u+f f(eard,d rc)o, buffer,u ncto)u
n      t| )                                         ~~~~~~~~~~ ^

      |                                            ~~~~~~~~~~ ^
In file included from In file included from ../fs/ext2/ialloc.c../block/blk-map.c::188:
:
In file included from In file included from ../include/linux/backing-dev.h../include/linux/bio.h::1610:
:
In file included from In file included from ../include/linux/writeback.h../include/linux/blk_types.h::1310:
:
In file included from In file included from ../include/linux/blk_types.h../include/linux/bvec.h::1010:
:
In file included from In file included from ../include/linux/bvec.h../include/linux/highmem.h::1012:
:
In file included from In file included from ../include/linux/highmem.h../include/linux/hardirq.h::1211:
:
In file included from In file included from ../include/linux/hardirq.h./arch/riscv/include/generated/asm/hardirq.h::111:
:
In file included from In file included from ./arch/riscv/include/generated/asm/hardirq.h../include/asm-generic/hardirq.h::117:
:
In file included from In file included from ../include/asm-generic/hardirq.h../include/linux/irq.h::1720:
:
In file included from In file included from ../include/linux/irq.h../include/linux/io.h::2014:
:
In file included from In file included from ../include/linux/io.h../arch/riscv/include/asm/io.h::14136:
:
In file included from ../include/asm-generic/io.h../arch/riscv/include/asm/io.h::847136::
2../include/asm-generic/io.h:: 820warning: :performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]2
: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         o  u820t | s        li(nasdld(ra,d dbru,f fbeurf,f ecro,u ncto)u;n
t      )| ;        ^~~~~~~~~~~~~~~~~~~~~~~~~~

      |         ^~~~~~~~~~~~~~~~~~~~~~~~~../arch/riscv/include/asm/io.h
:120:55../arch/riscv/include/asm/io.h:: 106note: :expanded from macro 'outsl'53
: note: expanded from macro 'insl'
  120 | #  d106e | f#idneef ionuet siln(sald(dard,d rb,u fbfuefrf,e rc,o ucnotu)n t_)_ o_u_tisnls(lP(CPIC_II_OIBOABSAES E+  +( a(daddrd)r,) ,b ubfuffefre,r ,c ocuonutn)t
)      
|                                                  ~~~~~~~~~~ ^| 
                                         ~~~~~~~~~~ ^
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      block/blk-merge.o
7 warnings generated.
  AR      kernel/dma/built-in.a
  CC      kernel/entry/common.o
7 warnings generated.
  CC      fs/ext2/inode.o
7 warnings generated.
  CC      fs/ext2/ioctl.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/ext2/namei.o
7 warnings generated.
  CC      kernel/entry/syscall_user_dispatch.o
7 warnings generated.
  CC      block/blk-timeout.o
7 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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      kernel/entry/built-in.a
7 warnings generated.
  CC      kernel/time/time.o
  CC      fs/ext2/symlink.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      block/blk-lib.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/ext2/trace.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      block/blk-mq.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/time/timer.o
7 warnings generated.
  CC      block/blk-mq-tag.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      fs/ext2/built-in.a
  CC      fs/ramfs/inode.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/ramfs/file-nommu.o
7 warnings generated.
  CC      kernel/time/hrtimer.o
7 warnings generated.
  CC      block/blk-stat.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      block/blk-mq-sysfs.o
In file included from ../kernel/time/hrtimer.c:30:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:8207:2 warning:s generated.
 warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      fs/ramfs/built-in.a
  AR      fs/unicode/built-in.a
  AR      fs/hostfs/built-in.a
  CC      fs/open.o
7 warnings generated.
7 warnings generated.
  CC      block/blk-mq-cpumap.o
  CC      kernel/time/sleep_timeout.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      block/blk-mq-sched.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/time/timekeeping.o
In file included from ../fs/open.c:16:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:16:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:16:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:16:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:16:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:16:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:16:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/read_write.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/math/div64.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/math/gcd.o
  CC      lib/math/lcm.o
7 warnings generated.
  CC      kernel/time/ntp.o
  CC      lib/math/int_log.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/math/int_pow.o
  CC      block/genhd.o
  CC      lib/math/int_sqrt.o
  CC      lib/math/reciprocal_div.o
  CC      lib/math/rational.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/file_table.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/time/clocksource.o
  AR      lib/math/built-in.a
  CC      lib/crypto/chacha.o
  CC      lib/crypto/blake2s.o
7 warnings generated.
  CC      block/ioprio.o
In file included from ../fs/file_table.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/super.o
7 warnings generated.
  CC      kernel/time/jiffies.o
  CC      lib/crypto/blake2s-generic.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/crypto/blake2s-selftest.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/time/timer_list.o
  CC      block/badblocks.o
  AR      lib/crypto/built-in.a
  CC      lib/argv_split.o
  CC      lib/bug.o
7 warnings generated.
  CC      fs/char_dev.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/time/timeconv.o
  CC      block/blk-rq-qos.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/buildid.o
  CC      kernel/time/timecounter.o
7 warnings generated.
  CC      fs/stat.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      kernel/time/alarmtimer.o
7 warnings generated.
  CC      block/disk-events.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/cmdline.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/cpumask.o
7 warnings generated.
  CC      kernel/time/posix-timers.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      block/blk-ia-ranges.o
  CC      fs/exec.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/ctype.o
  CC      lib/dec_and_lock.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/decompress.o
7 warnings generated.
  CC      lib/dump_stack.o
  CC      block/early-lookup.o
7 warnings generated.
  CC      kernel/time/posix-cpu-timers.o
7 warnings generated.
  CC      fs/pipe.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/earlycpio.o
  CC      lib/extable.o
7 warnings generated.
  CC      block/bfq-iosched.o
7 warnings generated.
  CC      kernel/time/posix-clock.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/fdt.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/namei.o
  CC      lib/fdt_addresses.o
  CC      lib/fdt_empty_tree.o
In file included from   CC      lib/fdt_ro.o
../kernel/time/posix-clock.c:12:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/fdt_rw.o
  CC      kernel/time/itimer.o
  CC      lib/fdt_strerror.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/fdt_sw.o
  CC      lib/fdt_wip.o
  CC      lib/flex_proportions.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
7 warnings generated.
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      block/bfq-wf2q.o
  CC      lib/idr.o
7 warnings generated.
  CC      kernel/time/clockevents.o
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/fcntl.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/iomem_copy.o
7 warnings generated.
  CC      block/bfq-cgroup.o
7 warnings generated.
  CC      kernel/time/tick-common.o
In file included from ../lib/iomem_copy.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/iomem_copy.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/iomem_copy.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/iomem_copy.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/iomem_copy.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/iomem_copy.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/iomem_copy.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/irq_regs.o
In file included from ../fs/fcntl.c:8:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/is_single_threaded.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/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/ioctl.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      block/blk-pm.o
  CC      lib/klist.o
7 warnings generated.
  CC      kernel/time/tick-broadcast.o
  CC      lib/kobject.o
In file included from ../fs/ioctl.c:8:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      block/built-in.a
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AS      arch/riscv/lib/clear_page.o
7 warnings generated.
  CC      fs/readdir.o
  CC      arch/riscv/lib/csum.o
7 warnings generated.
  CC      kernel/time/sched_clock.o
  CC      lib/kobject_uevent.o
  CC      arch/riscv/lib/delay.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      kernel/time/built-in.a
  CC      kernel/fork.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AS      arch/riscv/lib/memcpy.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  AS      arch/riscv/lib/memmove.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AS      arch/riscv/lib/memset.o
  CC      fs/select.o
  CC      arch/riscv/lib/riscv_v_helpers.o
  AS      arch/riscv/lib/strcmp.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/logic_pio.o
  AS      arch/riscv/lib/strlen.o
  AS      arch/riscv/lib/strncmp.o
  AS      arch/riscv/lib/tishift.o
In file included from ../fs/select.c:22:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AS      arch/riscv/lib/xor.o
  AR      arch/riscv/lib/built-in.a
  AR      arch/riscv/lib/lib.a
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/cache/built-in.a
  CC      drivers/irqchip/irqchip.o
7 warnings generated.
  CC      lib/maple_tree.o
7 warnings generated.
  CC      kernel/exec_domain.o
7 warnings generated.
  CC      fs/dcache.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/irqchip/irq-riscv-intc.o
In file included from ../kernel/exec_domain.c:19:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/panic.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/irqchip/irq-riscv-aplic-main.o
7 warnings generated.
7 warnings generated.
  CC      fs/inode.o
  CC      kernel/cpu.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/memcat_p.o
7 warnings generated.
  CC      drivers/irqchip/irq-riscv-aplic-direct.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/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/nmi_backtrace.o
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/irqchip/irq-riscv-aplic-msi.o
7 warnings generated.
  CC      kernel/exit.o
7 warnings generated.
  CC      fs/attr.o
7 warnings generated.
  CC      lib/objpool.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/plist.o
7 warnings generated.
  CC      drivers/irqchip/irq-riscv-imsic-state.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/radix-tree.o
7 warnings generated.
  CC      fs/bad_inode.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/softirq.o
  CC      fs/file.o
7 warnings generated.
  CC      lib/ratelimit.o
  CC      drivers/irqchip/irq-riscv-imsic-early.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/rbtree.o
In file included from ../fs/file.c:10:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/seq_buf.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/resource.o
7 warnings generated.
  CC      drivers/irqchip/irq-riscv-imsic-platform.o
  CC      lib/siphash.o
7 warnings generated.
  CC      fs/filesystems.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/string.o
7 warnings generated.
  CC      drivers/irqchip/irq-sifive-plic.o
7 warnings generated.
  CC      kernel/sysctl.o
  CC      lib/timerqueue.o
  CC      lib/vsprintf.o
In file included from ../fs/filesystems.c:10:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/filesystems.c:10:
In file included from ../include/linux/syscalls.h:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/namespace.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      drivers/irqchip/built-in.a
  AR      drivers/bus/mhi/built-in.a
  CC      drivers/bus/simple-pm-bus.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/bus/built-in.a
7 warnings generated.
  AR      drivers/pinctrl/actions/built-in.a
  CC      kernel/capability.o
  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
  AR      drivers/pinctrl/nuvoton/built-in.a
  AR      drivers/pinctrl/nxp/built-in.a
  AR      drivers/pinctrl/qcom/built-in.a
  AR      drivers/pinctrl/sophgo/built-in.a
  AR      drivers/pinctrl/spacemit/built-in.a
  AR      drivers/pinctrl/sprd/built-in.a
  AR      drivers/pinctrl/sunplus/built-in.a
  AR      drivers/pinctrl/ti/built-in.a
  CC      drivers/pinctrl/core.o
7 warnings generated.
  CC      lib/win_minmax.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/seq_file.o
7 warnings generated.
  CC      kernel/ptrace.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/xarray.o
7 warnings generated.
  CC      drivers/pinctrl/pinctrl-utils.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/xattr.o
  CC      lib/lockref.o
  CC      drivers/pinctrl/pinmux.o
7 warnings generated.
  CC      kernel/user.o
  CC      lib/bcd.o
  CC      lib/sort.o
  CC      lib/parser.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/debug_locks.o
  CC      drivers/pinctrl/pinconf.o
7 warnings generated.
  CC      kernel/signal.o
7 warnings generated.
  CC      fs/libfs.o
  CC      lib/random32.o
  CC      lib/bust_spinlocks.o
  CC      drivers/pinctrl/pinconf-generic.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/signal.c:30:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:30:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:30:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:30:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:30:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:30:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:30:
In file included from ../include/linux/security.h:35:
In file included from ../include/linux/bpf.h:31:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/kasprintf.o
  CC      drivers/pinctrl/devicetree.o
7 warnings generated.
  CC      fs/fs-writeback.o
7 warnings generated.
  CC      kernel/sys.o
  CC      lib/bitmap.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/pinctrl/pinctrl-k210.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/pnode.o
  CC      lib/scatterlist.o
7 warnings generated.
  AR      drivers/pinctrl/built-in.a
  CC      drivers/gpio/gpiolib.o
7 warnings generated.
  CC      kernel/umh.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/splice.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/list_sort.o
  CC      lib/uuid.o
In file included from ../kernel/umh.c:9:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/iov_iter.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/workqueue.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      fs/sync.o
  CC      drivers/gpio/gpiolib-devres.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/clz_ctz.o
7 warnings generated.
  CC      drivers/gpio/gpiolib-legacy.o
  CC      lib/bsearch.o
7 warnings generated.
  CC      fs/utimes.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/pid.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/find_bit.o
7 warnings generated.
  CC      drivers/gpio/gpiolib-of.o
In file included from ../fs/utimes.c:6:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/llist.o
7 warnings generated.
  CC      fs/d_path.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
  CC      lib/lwq.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/memweight.o
  CC      lib/kfifo.o
7 warnings generated.
  CC      drivers/gpio/gpiolib-cdev.o
In file included from ../fs/d_path.c:2:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/task_work.o
7 warnings generated.
  CC      fs/stack.o
In file included from ../lib/kfifo.c:8:
In file included from ../include/linux/dma-mapping.h: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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../lib/kfifo.c../arch/riscv/include/asm/io.h::8120:
:In file included from 55../include/linux/dma-mapping.h:: 8note: :
expanded from macro 'outsl'In file included from 
../include/linux/scatterlist.h:9:
In file included from   ../arch/riscv/include/asm/io.h120: | 136#:
d../include/asm-generic/io.he:f1175i:n55e:  owarning: uperforming pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]t
sl(addr, b u1175f | f        erre,t ucronu n(tp)o r_t_ o>u tMsMlI(OP_CUIP_PIEORB_ALSIEM I+T ) (?a dNdUrL)L,  :b uPfCfIe_rI,O BcAoSuEn t+) 
p      | o                                           ~~~~~~~~~~ ^r
t;
      |                                                   ~~~~~~~~~~ ^
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
7 warnings generated.
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/percpu-refcount.o
7 warnings generated.
  CC      fs/fs_struct.o
  CC      kernel/extable.o
7 warnings generated.
  CC      drivers/gpio/gpiolib-swnode.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/rhashtable.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/statfs.o
7 warnings generated.
  CC      drivers/gpio/gpio-mmio.o
7 warnings generated.
  CC      kernel/params.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../fs/statfs.c:2:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/fs_pin.o
  CC      lib/base64.o
  CC      lib/once.o
7 warnings generated.
  CC      drivers/gpio/gpio-dwapb.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/kthread.o
  CC      fs/nsfs.o
  CC      lib/refcount.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/rcuref.o
7 warnings generated.
  CC      drivers/gpio/gpio-sifive.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/usercopy.o
7 warnings generated.
7 warnings generated.
  CC      fs/fs_types.o
  CC      kernel/sys_ni.o
  CC      kernel/nsproxy.o
  CC      lib/errseq.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      lib/bucket_locks.o
  AR      drivers/gpio/built-in.a
  AR      drivers/pwm/built-in.a
  AR      drivers/leds/blink/built-in.a
  AR      drivers/leds/simple/built-in.a
  CC      drivers/leds/led-core.o
  CC      fs/fs_context.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/generic-radix-tree.o
7 warnings generated.
  CC      kernel/notifier.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/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/leds/led-class.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/bitmap-str.o
7 warnings generated.
  CC      fs/fs_parser.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/leds/leds-gpio.o
7 warnings generated.
  CC      kernel/ksysfs.o
  CC      lib/string_helpers.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/fsopen.o
  CC      drivers/leds/uleds.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/cred.o
  CC      lib/hexdump.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/kstrtox.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/leds/built-in.a
7 warnings generated.
  AR      drivers/pci/controller/dwc/built-in.a
  CC      fs/init.o
  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/iomap_copy.o
7 warnings generated.
  CC      kernel/reboot.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         retuIn file included from r../fs/init.cn: 13(:
In file included from p../include/linux/security.ho:r35:
tIn file included from  ../include/linux/bpf.h>:31 :
MIn file included from M../include/linux/memcontrol.hI:O13_:
UIn file included from P../include/linux/cgroup.hP:E26R:
_In file included from L../include/linux/kernel_stat.hI:M8I:
TIn file included from )../include/linux/interrupt.h :?11 :
NIn file included from U../include/linux/hardirq.hL:L11 :
In file included from :./arch/riscv/include/generated/asm/hardirq.h :P1C:
IIn file included from _../include/asm-generic/hardirq.hI:O17B:
AIn file included from S../include/linux/irq.hE: 20+:
 pIn file included from o../include/linux/io.hr:t14;:

In file included from       ../arch/riscv/include/asm/io.h| :                                                  ~~~~~~~~~~ ^136
:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/devres.o
7 warnings generated.
7 warnings generated.
  AR      drivers/pci/built-in.a
  CC      fs/kernel_read_file.o
  AR      drivers/video/backlight/built-in.a
  AR      drivers/video/fbdev/core/built-in.a
  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
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  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
  AR      drivers/idle/built-in.a
  AR      drivers/char/ipmi/built-in.a
  AR      drivers/amba/built-in.a
  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 ../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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/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 ../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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/clk/ingenic/built-in.a
7 warnings generated.
  AR      drivers/clk/mediatek/built-in.a
7 warnings generated.
  CC      kernel/async.o
  CC      lib/hweight.o
  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
  CC      lib/bitrev.o
  AR      drivers/clk/renesas/built-in.a
  AR      drivers/clk/socfpga/built-in.a
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  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
7 warnings generated.
  AR      drivers/clk/versatile/built-in.a
  CC      fs/mnt_idmapping.o
  AR      drivers/clk/xilinx/built-in.a
  CC      drivers/clk/clk-devres.o
  CC      kernel/range.o
  CC      lib/crc-itu-t.o
  CC      kernel/smpboot.o
  CC      fs/remap_range.o
  CC      drivers/clk/clk-bulk.o
  HOSTCC  lib/gen_crc32table
  CC      lib/crc7.o
  CC      kernel/ucount.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/clk/clkdev.o
7 warnings generated.
  CC      fs/pidfs.o
  CC      kernel/regset.o
  CC      lib/percpu_counter.o
  CC      kernel/ksyms_common.o
  CC      drivers/clk/clk.o
In file included from ../fs/pidfs.c:5:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:5:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:5:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:5:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:5:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:5:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:5:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/syscall.o
7 warnings generated.
  CC      fs/buffer.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/groups.o
  CC      lib/checksum.o
In file included from ../fs/buffer.c:24:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/buffer.c:24:
In file included from ../include/linux/syscalls.h:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/buffer.c:24:
In file included from ../include/linux/syscalls.h:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/buffer.c:24:
In file included from ../include/linux/syscalls.h:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/clk/clk-divider.o
  CC      lib/strncpy_from_user.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      kernel/freezer.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/strnlen_user.o
7 warnings generated.
  CC      drivers/clk/clk-fixed-factor.o
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/mpage.o
7 warnings generated.
  CC      kernel/smp.o
  CC      lib/sbitmap.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/clk/clk-fixed-rate.o
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/proc_namespace.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/clk/clk-gate.o
7 warnings generated.
  CC      lib/group_cpus.o
  CC      kernel/stop_machine.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/anon_inodes.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/clk/clk-multiplier.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      lib/devmem_is_allowed.o
7 warnings generated.
  CC      kernel/utsname_sysctl.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/clk/clk-mux.o
  CC      kernel/irq_work.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      lib/lib.a
7 warnings generated.
  GEN     lib/crc32table.h
  CC      lib/crc32.o
  CC      fs/binfmt_script.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/clk/clk-composite.o
7 warnings generated.
  CC      kernel/cpu_pm.o
  CC      fs/binfmt_elf_fdpic.o
  AR      lib/built-in.a
  AR      sound/built-in.a
  AR      virt/lib/built-in.a
  AR      virt/built-in.a
  CC      kernel/context_tracking.o
  CC      drivers/clk/clk-fractional-divider.o
  CC      kernel/iomem.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      fs/binfmt_flat.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
  120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
      |                                            ~~~~~~~~~~ ^
7 warnings generated.
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/drop_caches.o
7 warnings generated.
7 warnings generated.
  CC      kernel/rseq.o
  CC      drivers/clk/clk-gpio.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      fs/sysctls.o
In file included from ../drivers/clk/clk-gpio.c:20:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-gpio.c:20:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-gpio.c:20:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-gpio.c:20:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-gpio.c:20:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-gpio.c:20:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-gpio.c:20:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../kernel/rseq.c:13:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/clk/clk-conf.o
  AR      fs/built-in.a
7 warnings generated.
  CC      drivers/clk/clk-k210.o
7 warnings generated.
  AR      drivers/soc/apple/built-in.a
  AR      drivers/soc/aspeed/built-in.a
  AR      kernel/built-in.a
  AR      drivers/soc/bcm/built-in.a
  CC      drivers/soc/canaan/k210-sysctl.o
  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
  AR      drivers/soc/ixp4xx/built-in.a
  AR      drivers/soc/loongson/built-in.a
  AR      drivers/soc/mediatek/built-in.a
  AR      drivers/soc/microchip/built-in.a
  AR      drivers/soc/nuvoton/built-in.a
  AR      drivers/soc/pxa/built-in.a
  AR      drivers/soc/amlogic/built-in.a
  AR      drivers/soc/qcom/built-in.a
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  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/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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/soc/ti/built-in.a
  AR      drivers/soc/versatile/built-in.a
  AR      drivers/soc/xilinx/built-in.a
  AR      drivers/virtio/built-in.a
  AR      drivers/reset/amlogic/built-in.a
  AR      drivers/tty/vt/built-in.a
  AR      drivers/reset/hisilicon/built-in.a
  AR      drivers/tty/serial/8250/built-in.a
  AR      drivers/reset/starfive/built-in.a
  CC      drivers/tty/serial/serial_core.o
  AR      drivers/reset/sti/built-in.a
  AR      drivers/reset/tegra/built-in.a
  CC      drivers/reset/core.o
7 warnings generated.
  AR      drivers/soc/canaan/built-in.a
7 warnings generated.
  AR      drivers/soc/built-in.a
  AR      drivers/clk/built-in.a
  AR      drivers/char/agp/built-in.a
  CC      drivers/char/mem.o
  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/riscv/built-in.a
  AR      drivers/iommu/built-in.a
  CC      drivers/char/random.o
In file included from ../drivers/tty/serial/serial_core.c:25:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_core.c:25:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_core.c:25:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_core.c:25:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_core.c:25:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_core.c:25:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:25:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/char/mem.c:23:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:23:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:23:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:23:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:23:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:23:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/mem.c:23:
In file included from ../include/linux/highmem.h:12:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb'
  104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
      |                                          ~~~~~~~~~~ ^
7 warnings generated.
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/reset/reset-k210.o
  AR      drivers/gpu/host1x/built-in.a
  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
7 warnings generated.
  AR      drivers/gpu/drm/omapdrm/built-in.a
  CC      drivers/tty/serial/serial_base_bus.o
  AR      drivers/gpu/drm/tilcdc/built-in.a
  AR      drivers/gpu/drm/imx/built-in.a
  AR      drivers/gpu/drm/i2c/built-in.a
7 warnings generated.
  AR      drivers/gpu/drm/panel/built-in.a
  CC      drivers/char/misc.o
  AR      drivers/gpu/drm/bridge/analogix/built-in.a
  AR      drivers/gpu/drm/bridge/cadence/built-in.a
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/gpu/drm/bridge/imx/built-in.a
7 warnings generated.
  AR      drivers/gpu/drm/bridge/synopsys/built-in.a
  AR      drivers/gpu/drm/bridge/built-in.a
  AR      drivers/reset/built-in.a
  AR      drivers/gpu/drm/hisilicon/built-in.a
  CC      drivers/base/power/sysfs.o
  AR      drivers/gpu/drm/mxsfb/built-in.a
  AR      drivers/gpu/drm/tiny/built-in.a
  AR      drivers/gpu/drm/xlnx/built-in.a
  AR      drivers/gpu/drm/gud/built-in.a
  AR      drivers/gpu/drm/solomon/built-in.a
  AR      drivers/gpu/drm/built-in.a
  AR      drivers/gpu/vga/built-in.a
  AR      drivers/gpu/built-in.a
  AR      drivers/block/built-in.a
  AR      drivers/tty/ipwireless/built-in.a
  CC      drivers/tty/tty_io.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/tty/serial/serial_ctrl.o
  AR      drivers/char/built-in.a
  CC      drivers/tty/serial/serial_port.o
  CC      drivers/base/power/generic_ops.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/tty/serial/earlycon.o
  CC      drivers/base/power/common.o
7 warnings generated.
  CC      drivers/tty/serial/sifive.o
7 warnings generated.
  CC      drivers/tty/n_tty.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/tty/tty_ioctl.o
  CC      drivers/base/power/qos.o
7 warnings generated.
  AR      drivers/tty/serial/built-in.a
  CC      drivers/tty/tty_ldisc.o
  CC      drivers/base/power/runtime.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
In file included from ../drivers/tty/tty_ioctl.c:28:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:28:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:28:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:28:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:28:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:28:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:28:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/tty/tty_buffer.o
7 warnings generated.
  CC      drivers/tty/tty_port.o
7 warnings generated.
  CC      drivers/tty/tty_mutex.o
  CC      drivers/base/power/wakeirq.o
  CC      drivers/tty/tty_ldsem.o
In file included from ../drivers/tty/tty_port.c:20:
In file included from ../include/linux/serdev.h:10:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:20:
In file included from ../include/linux/serdev.h:10:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:20:
In file included from ../include/linux/serdev.h:10:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:20:
In file included from ../include/linux/serdev.h:10:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:20:
In file included from ../include/linux/serdev.h:10:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:20:
In file included from ../include/linux/serdev.h:10:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:20:
In file included from ../include/linux/serdev.h:10:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/tty/tty_baudrate.o
  CC      drivers/tty/tty_jobctrl.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/power/main.o
  CC      drivers/tty/n_null.o
  CC      drivers/tty/pty.o
  CC      drivers/base/power/wakeup.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/power/wakeup_stats.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      drivers/tty/built-in.a
7 warnings generated.
  AR      drivers/misc/eeprom/built-in.a
  CC      drivers/mfd/syscon.o
  AR      drivers/misc/cb710/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
  AR      drivers/nfc/built-in.a
  AR      drivers/dax/hmem/built-in.a
  AR      drivers/dax/built-in.a
7 warnings generated.
  AR      drivers/cxl/core/built-in.a
  CC      drivers/base/power/clock_ops.o
  AR      drivers/cxl/built-in.a
  CC      drivers/base/firmware_loader/builtin/main.o
  CC      drivers/base/regmap/regmap.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/base/firmware_loader/builtin/built-in.a
  AR      drivers/base/firmware_loader/built-in.a
7 warnings generated.
  AR      drivers/base/test/built-in.a
  AR      drivers/mfd/built-in.a
  CC      drivers/base/component.o
  AR      drivers/macintosh/built-in.a
  AR      drivers/scsi/built-in.a
  AR      drivers/nvme/common/built-in.a
  AR      drivers/nvme/host/built-in.a
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/nvme/target/built-in.a
  AR      drivers/nvme/built-in.a
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/spi/spi.o
7 warnings generated.
  AR      drivers/base/power/built-in.a
  CC      drivers/base/core.o
7 warnings generated.
  CC      drivers/base/regmap/regcache.o
  CC      drivers/base/bus.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/regmap/regcache-rbtree.o
  CC      drivers/base/dd.o
7 warnings generated.
  CC      drivers/spi/spi-dw-core.o
7 warnings generated.
  CC      drivers/spi/spi-dw-mmio.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
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: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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/regmap/regcache-flat.o
7 warnings generated.
  CC      drivers/base/syscore.o
In file included from ../drivers/spi/spi-dw-core.c:10:
In file included from ../include/linux/dma-mapping.h: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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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: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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      drivers/base/regmap/regcache-maple.o
  AR      drivers/spi/built-in.a
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/net/phy/mediatek/built-in.a
7 warnings generated.
  AR      drivers/net/phy/qcom/built-in.a
  CC      drivers/base/regmap/regmap-mmio.o
  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
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/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/net/built-in.a
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/firewire/built-in.a
  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
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/driver.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/i2c/busses/i2c-designware-master.o
7 warnings generated.
  AR      drivers/base/regmap/built-in.a
  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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/platform.o
7 warnings generated.
  CC      drivers/i2c/busses/i2c-designware-platdrv.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:
  CC      drivers/base/cpu.o
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/firmware.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/init.o
7 warnings generated.
  AR      drivers/i2c/busses/built-in.a
  AR      drivers/i2c/muxes/built-in.a
  CC      drivers/i2c/i2c-boardinfo.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/map.o
7 warnings generated.
  CC      drivers/base/devres.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/attribute_container.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/transport_class.o
  CC      drivers/i2c/i2c-core-base.o
  CC      drivers/base/topology.o
  CC      drivers/base/container.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/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/base/property.o
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/cacheinfo.o
  CC      drivers/base/swnode.o
7 warnings generated.
  CC      drivers/i2c/i2c-core-smbus.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/base/devtmpfs.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/pinctrl.o
  CC      drivers/base/platform-msi.o
7 warnings generated.
  CC      drivers/i2c/i2c-core-of.o
In file included from ../drivers/base/devtmpfs.c:19:
In file included from ../include/linux/syscalls.h:94:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:94:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/base/arch_topology.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/i2c/i2c-dev.o
7 warnings generated.
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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-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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/i3c/built-in.a
  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/rc/built-in.a
  AR      drivers/media/common/b2c2/built-in.a
  AR      drivers/media/common/saa7146/built-in.a
7 warnings generated.
  AR      drivers/media/common/siano/built-in.a
  AR      drivers/media/common/v4l2-tpg/built-in.a
  AR      drivers/media/common/videobuf2/built-in.a
  AR      drivers/media/common/built-in.a
  AR      drivers/media/platform/allegro-dvt/built-in.a
  AR      drivers/media/platform/amlogic/meson-ge2d/built-in.a
  AR      drivers/media/pci/ttpci/built-in.a
  AR      drivers/media/platform/amlogic/built-in.a
  AR      drivers/media/pci/b2c2/built-in.a
  AR      drivers/media/platform/amphion/built-in.a
  AR      drivers/media/pci/pluto2/built-in.a
  AR      drivers/media/platform/aspeed/built-in.a
  AR      drivers/media/pci/dm1105/built-in.a
  AR      drivers/media/platform/atmel/built-in.a
  AR      drivers/media/pci/pt1/built-in.a
  AR      drivers/media/platform/broadcom/built-in.a
  AR      drivers/media/pci/pt3/built-in.a
  AR      drivers/media/pci/mantis/built-in.a
  AR      drivers/media/platform/cadence/built-in.a
  AR      drivers/media/pci/ngene/built-in.a
  AR      drivers/media/platform/chips-media/coda/built-in.a
  AR      drivers/media/pci/ddbridge/built-in.a
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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  AR      drivers/media/platform/chips-media/wave5/built-in.a
:
In file included from ../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
In file included from ../include/asm-generic/hardirq.h:17:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:136:
../include/asm-generic/io.h:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/platform/chips-media/built-in.a
  AR      drivers/media/pci/saa7146/built-in.a
  AR      drivers/media/pci/smipcie/built-in.a
  AR      drivers/media/platform/imagination/built-in.a
  AR      drivers/media/pci/netup_unidvb/built-in.a
  AR      drivers/media/platform/intel/built-in.a
  AR      drivers/media/platform/marvell/built-in.a
  AR      drivers/media/pci/intel/ipu3/built-in.a
  AR      drivers/base/built-in.a
  AR      drivers/media/pci/intel/ivsc/built-in.a
  AR      drivers/media/platform/mediatek/jpeg/built-in.a
  AR      drivers/media/platform/mediatek/mdp/built-in.a
  AR      drivers/media/pci/intel/built-in.a
  AR      drivers/media/platform/mediatek/vcodec/common/built-in.a
  AR      drivers/media/platform/mediatek/vpu/built-in.a
  AR      drivers/media/pci/built-in.a
  AR      drivers/media/platform/mediatek/vcodec/encoder/built-in.a
  AR      drivers/media/usb/b2c2/built-in.a
  AR      drivers/media/mmc/siano/built-in.a
  AR      drivers/media/platform/mediatek/vcodec/decoder/built-in.a
  AR      drivers/media/usb/dvb-usb/built-in.a
  AR      drivers/media/mmc/built-in.a
  AR      drivers/media/platform/mediatek/vcodec/built-in.a
  AR      drivers/media/usb/dvb-usb-v2/built-in.a
  AR      drivers/media/firewire/built-in.a
  AR      drivers/media/platform/mediatek/mdp3/built-in.a
  AR      drivers/media/usb/s2255/built-in.a
7 warnings generated.
  AR      drivers/media/platform/mediatek/built-in.a
  AR      drivers/media/spi/built-in.a
  AR      drivers/media/usb/siano/built-in.a
  AR      drivers/i2c/built-in.a
  AR      drivers/media/platform/microchip/built-in.a
  AR      drivers/media/test-drivers/built-in.a
  AR      drivers/media/usb/ttusb-budget/built-in.a
  AR      drivers/ptp/built-in.a
  AR      drivers/media/platform/nuvoton/built-in.a
  AR      drivers/media/platform/nvidia/tegra-vde/built-in.a
  AR      drivers/media/usb/ttusb-dec/built-in.a
  CC      drivers/power/reset/syscon-reboot.o
  AR      drivers/media/platform/nvidia/built-in.a
  AR      drivers/media/platform/nxp/dw100/built-in.a
  AR      drivers/media/usb/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/qcom/camss/built-in.a
  AR      drivers/media/platform/qcom/venus/built-in.a
  AR      drivers/media/platform/nxp/built-in.a
  CC      drivers/mmc/core/core.o
  AR      drivers/media/platform/qcom/built-in.a
  CC      drivers/mmc/core/bus.o
  AR      drivers/media/platform/raspberrypi/pisp_be/built-in.a
  AR      drivers/media/platform/raspberrypi/rp1-cfe/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
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  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
  AR      drivers/media/platform/samsung/s5p-mfc/built-in.a
  AR      drivers/media/platform/samsung/built-in.a
  AR      drivers/media/platform/st/sti/bdisp/built-in.a
  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
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/platform/st/stm32/built-in.a
7 warnings generated.
  AR      drivers/media/platform/st/built-in.a
  AR      drivers/power/reset/built-in.a
  AR      drivers/power/built-in.a
  AR      drivers/media/platform/sunxi/sun4i-csi/built-in.a
  AR      drivers/ufs/built-in.a
  AR      drivers/media/platform/sunxi/sun6i-csi/built-in.a
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  AR      drivers/media/platform/sunxi/sun6i-mipi-csi2/built-in.a
  AR      drivers/firmware/arm_ffa/built-in.a
  AR      drivers/firmware/arm_scmi/built-in.a
  AR      drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/built-in.a
  AR      drivers/firmware/broadcom/built-in.a
  AR      drivers/media/platform/sunxi/sun8i-di/built-in.a
  AR      drivers/firmware/cirrus/built-in.a
  AR      drivers/media/platform/sunxi/sun8i-rotate/built-in.a
  AR      drivers/media/platform/sunxi/built-in.a
  AR      drivers/firmware/meson/built-in.a
7 warnings generated.
  AR      drivers/firmware/microchip/built-in.a
  AR      drivers/media/platform/ti/am437x/built-in.a
  AR      drivers/media/platform/ti/cal/built-in.a
  AR      drivers/firmware/efi/built-in.a
  AR      drivers/firmware/imx/built-in.a
  AR      drivers/media/platform/ti/vpe/built-in.a
  AR      drivers/media/platform/ti/davinci/built-in.a
  AR      drivers/firmware/psci/built-in.a
  AR      drivers/firmware/qcom/built-in.a
  AR      drivers/media/platform/ti/j721e-csi2rx/built-in.a
  AR      drivers/media/platform/ti/omap/built-in.a
  AR      drivers/firmware/smccc/built-in.a
  CC      drivers/mmc/core/host.o
  AR      drivers/media/platform/ti/omap3isp/built-in.a
  AR      drivers/firmware/tegra/built-in.a
  AR      drivers/media/platform/ti/built-in.a
  AR      drivers/firmware/xilinx/built-in.a
  AR      drivers/media/platform/verisilicon/built-in.a
  AR      drivers/firmware/built-in.a
  AR      drivers/media/platform/via/built-in.a
  AR      drivers/media/platform/xilinx/built-in.a
  CC      drivers/mmc/core/mmc.o
  AR      drivers/media/platform/built-in.a
  AR      drivers/media/built-in.a
7 warnings generated.
  CC      drivers/clocksource/timer-of.o
  CC      drivers/mmc/core/mmc_ops.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  In file included from 804 | ../drivers/mmc/core/mmc.c        :i18n:
sIn file included from b../include/linux/mmc/host.h(:a19d:
dIn file included from r../include/linux/blk-crypto-profile.h,: 9bu:
fIn file included from f../include/linux/bio.he:r,10 :
cIn file included from ou../include/linux/blk_types.hn:t)10;:

      In file included from | ../include/linux/bvec.h        ^~~~~~~~~~~~~~~~~~~~~~~~~
:10:
In file included from ../arch/riscv/include/asm/io.h../include/linux/highmem.h:104::5312::
 note: In file included from expanded from macro 'insb'../include/linux/hardirq.h
:11:
In file included from   104./arch/riscv/include/generated/asm/hardirq.h | :#d1e:
fiIn file included from n../include/asm-generic/hardirq.he: i17n:
sIn file included from b../include/linux/irq.h(a:d20d:
r,In file included from  ../include/linux/io.hbu:14f:
feIn file included from r../arch/riscv/include/asm/io.h, :co136u:
n../include/asm-generic/io.ht:) 812_:_i2n:s b(warning: Pperforming pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]C
I_IOBASE +   (812a | dd        ri),n bsuwf(fear,d dcoru,n t)b
u      | f                                         ~~~~~~~~~~ ^f
er, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw'
  105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr),In file included from  ../drivers/mmc/core/mmc_ops.cb:u11f:
fIn file included from ../include/linux/scatterlist.he:r9,:
 In file included from c../arch/riscv/include/asm/io.h:o136:
u../include/asm-generic/io.hn:t812:)2
:       | warning:                                          ~~~~~~~~~~ ^performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]

  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
In file included from ../drivers/mmc/core/mmc_ops.c:11:
In file included from ../include/linux/scatterlist.h:9:
  In file included from 820../arch/riscv/include/asm/io.h | :136        :
i../include/asm-generic/io.hn:s820l:2(:a dwarning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]d
r, bu  820f | f        einrs,l( acdodru, nbtuf)f;er
,       | co        ^~~~~~~~~~~~~~~~~~~~~~~~~u
nt);
      ../arch/riscv/include/asm/io.h|         ^~~~~~~~~~~~~~~~~~~~~~~~~:
106:53../arch/riscv/include/asm/io.h::106 :note: 53:expanded from macro 'insl' note: 
expanded from macro 'insl'
  106   | 106# | de#fdienef iinnsel (iadndsrl,( abdudfrf,e rb,u cfofunetr) ,_ _cinoslu(nPtCI)_ I_O_BAiSnEs +l ((aPddCr)I,_ bIuOffBeAr,S Ec o+un t()
a      d|                                          ~~~~~~~~~~ ^d
r), 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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'In file included from 
../drivers/mmc/core/mmc.c:  18118:
 | In file included from #../include/linux/mmc/host.hd:ef19in:
e In file included from o../include/linux/blk-crypto-profile.hu:ts9b:
(In file included from ad../include/linux/bio.hd:r10,:
 In file included from b../include/linux/blk_types.huf:10f:
erIn file included from ,../include/linux/bvec.h :c10o:
uIn file included from n../include/linux/highmem.ht): 12_:
_In file included from ou../include/linux/hardirq.ht:s11b:
(PIn file included from C./arch/riscv/include/generated/asm/hardirq.hI_:I1O:
BIn file included from A../include/asm-generic/hardirq.hSE: 17+:
 (In file included from a../include/linux/irq.hdd:r20):
, In file included from bu../include/linux/io.h:f14fe:
rIn file included from , ../arch/riscv/include/asm/io.hc:ou136n:
t)../include/asm-generic/io.h
:      829|                                            ~~~~~~~~~~ ^:
2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define oIn file included from ut../drivers/mmc/core/mmc_ops.cs:b11(:
In file included from a../include/linux/scatterlist.hd:d9:
rIn file included from ,../arch/riscv/include/asm/io.h: 136b:
u../include/asm-generic/io.hf:f838:e2:r ,warning:  performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
count  )838  |         _o_uotustw(sabdd(rP,C Ibu_fIfOerB, AcSoEu nt+) ;
(      a| d        ^~~~~~~~~~~~~~~~~~~~~~~~~~
dr)../arch/riscv/include/asm/io.h:,119 :b55:u note: fexpanded from macro 'outsw'f
er,   119c | o#duenfti)ne 
      |                                            ~~~~~~~~~~ ^
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 In file included from ../include/linux/highmem.h../drivers/mmc/core/mmc_ops.c::1211:
:
In file included from In file included from ../include/linux/hardirq.h../include/linux/scatterlist.h::911:
:
In file included from In file included from ../arch/riscv/include/asm/io.h:./arch/riscv/include/generated/asm/hardirq.h136::
../include/asm-generic/io.h1::
847:In file included from 2:../include/asm-generic/hardirq.h :warning: 17performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]:

In file included from ../include/linux/irq.h:20  :
847In file included from  | ../include/linux/io.h        o:u14ts:
lIn file included from (../arch/riscv/include/asm/io.had:d136r,:
 ../include/asm-generic/io.hb:u838f:f2er:,  warning: coperforming pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]un
t);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
  ../arch/riscv/include/asm/io.h838: | 120:        55o:u tnote: expanded from macro 'outsl's
w(a  120d | d#rde,f inbuef ofuetrsl,( acddoru, nbtu)ff;e
r      , | c        ^~~~~~~~~~~~~~~~~~~~~~~~~~ou
nt) _../arch/riscv/include/asm/io.h_o:ut119s:l(55P:C Inote: _Iexpanded from macro 'outsw'O
BASE + (ad  d119r) | ,# bdueffferi,n eco unotu)
t      s| w                                           ~~~~~~~~~~ ^
(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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
7 warnings generated.
  CC      drivers/clocksource/timer-probe.o
  CC      drivers/mmc/core/sd.o
7 warnings generated.
  CC      drivers/mmc/core/sd_ops.o
7 warnings generated.
  CC      drivers/mmc/core/sdio.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/clocksource/dummy_timer.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/mmc/core/sdio_ops.o
7 warnings generated.
  CC      drivers/mmc/core/sdio_bus.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/mmc/core/sdio_cis.o
7 warnings generated.
  CC      drivers/clocksource/timer-clint.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/mmc/core/sdio_irq.o
7 warnings generated.
7 warnings generated.
  AR      drivers/clocksource/built-in.a
  CC      drivers/mmc/core/sd_uhs2.o
  CC      drivers/of/base.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/mmc/core/slot-gpio.o
7 warnings generated.
In file included from ../drivers/mmc/core/sd_uhs2.c:26:
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_uhs2.c:26:
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_uhs2.c:26:
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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_uhs2.c:26:
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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_uhs2.c:26:
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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_uhs2.c:26:
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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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_uhs2.c:26:
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/of/cpu.o
7 warnings generated.
  CC      drivers/mmc/core/regulator.o
  CC      drivers/of/device.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/of/module.o
7 warnings generated.
  CC      drivers/mmc/core/pwrseq.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:In file included from 812:../drivers/mmc/core/regulator.c2::9:
 In file included from warning: ../include/linux/regulator/consumer.h:performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]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:81226 | :
        In file included from i../include/linux/kernel_stat.hn:8s:
wIn file included from (../include/linux/interrupt.h:a11d:
dIn file included from ../include/linux/hardirq.hr:,11:
 In file included from b./arch/riscv/include/generated/asm/hardirq.h:u1f:
fIn file included from ../include/asm-generic/hardirq.he:r17,:
In file included from  ../include/linux/irq.hc:o20:
uIn file included from ../include/linux/io.hn:t14:
)In file included from ;../arch/riscv/include/asm/io.h:
136      :
| ../include/asm-generic/io.h        ^~~~~~~~~~~~~~~~~~~~~~~~~:
804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]../arch/riscv/include/asm/io.h
:105:53: note: expanded from macro 'insw'
  105 | #define insw  (804a | d        idnrs,b( abdudrf,f ebru,f fecro, ucnoutn)t )_;
_      | i        ^~~~~~~~~~~~~~~~~~~~~~~~~n
sw(../arch/riscv/include/asm/io.hP:C104I:53_:I Onote: expanded from macro 'insb'B
ASE +   104( | a#ddedfirn)e ,i nbsub(fafdedrr, ,b ufcfoeur,n tco)u
n      t)|                                           ~~~~~~~~~~ ^__
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:In file included from 35:
../drivers/of/device.cIn file included from :../include/linux/suspend.h:55:
:
In file included from In file included from ../include/linux/swap.h../include/linux/of_address.h::9:
7In file included from :
../include/linux/memcontrol.hIn file included from :../include/linux/io.h13:
:In file included from 14../include/linux/cgroup.h:26:
In file included from ../include/linux/kernel_stat.h:8:
In file included from ../include/linux/interrupt.h:11:
In file included from ../include/linux/hardirq.h:11:
In file included from :
./arch/riscv/include/generated/asm/hardirq.h:1In file included from :
../arch/riscv/include/asm/io.hIn file included from :../include/asm-generic/hardirq.h:17136:
:
In file included from ../include/linux/irq.h../include/asm-generic/io.h::20820:
:In file included from 2../include/linux/io.h::14 :
warning: In file included from performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]../arch/riscv/include/asm/io.h
:136:
../include/asm-generic/io.h:812:2: warning:   performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
820 |         ins  l812( |         aidndswr(,a dbdur,f fbeufrf,er ,c coouunnt)t;)
;      | 
        ^~~~~~~~~~~~~~~~~~~~~~~~~      
|         ^~~~~~~~~~~~~~~~~~~~~~~~~../arch/riscv/include/asm/io.h
:105:53../arch/riscv/include/asm/io.h: :note: 106expanded from macro 'insw'
:53: note:   expanded from macro 'insl'105
 | #define in  s106w( | ad#ddr,e fbine inusflf(ear,d dcrou,n t)b u__finfsew(rP,CI _cIOoBuAnSEt )+  (_ad_dri)n, sbluf(fPeCrI, _cIoOuBntA)S
E      |                                           ~~~~~~~~~~ ^+
 (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:In file included from 820:../drivers/of/device.c2:: warning: 5performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]:

In file included from ../include/linux/of_address.h:7:
  820In file included from  | ../include/linux/io.h        i:n14sl:
(In file included from a../arch/riscv/include/asm/io.hdd:r,136 :
b../include/asm-generic/io.huf:f829e:r,2 :co uwarning: nperforming pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]t)
;
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h  :829106: | 53:         onote: uexpanded from macro 'insl'
tsb(  106a | #ddderfi,n e biunfsfl(eadrd,r,  bcuoffuern,t c)o;un
t)       | __i        ^~~~~~~~~~~~~~~~~~~~~~~~~~ns
l(PCI../arch/riscv/include/asm/io.h_I:OB118A:SE55 :+  (note: adexpanded from macro 'outsb'd
r), buffer  , 118c | ou#ndte)
f      | i                                         ~~~~~~~~~~ ^n
e 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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
  118 | #define outsb(addr, buffeIn file included from r,../drivers/of/device.c :c5ou:
ntIn file included from )../include/linux/of_address.h _:_7ou:
tIn file included from s../include/linux/io.hb(:P14CI:
_IIn file included from OB../arch/riscv/include/asm/io.hA:SE136 :
+../include/asm-generic/io.h :(838ad:d2r):,  bwarning: uperforming pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]ff
er, count)  
838      |  |                                            ~~~~~~~~~~ ^        
outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
  119 | #define outsw(addr, buffer, count) __In file included from o../drivers/mmc/core/regulator.cu:9t:
sIn file included from w../include/linux/regulator/consumer.h(:P35C:
IIn file included from ../include/linux/suspend.h_:I5O:
In file included from B../include/linux/swap.hA:9S:
EIn file included from ../include/linux/memcontrol.h :+13 :
In file included from (../include/linux/cgroup.ha:d26:
dIn file included from r../include/linux/kernel_stat.h):,8 :
In file included from b../include/linux/interrupt.hu:f11f:
eIn file included from ../include/linux/hardirq.hr:,11 :
cIn file included from ./arch/riscv/include/generated/asm/hardirq.ho:u1:
nIn file included from t../include/asm-generic/hardirq.h):17
:
In file included from ../include/linux/irq.h:20:
In file included from ../include/linux/io.h:14:
In file included from ../arch/riscv/include/asm/io.h:      136| :
                                           ~~~~~~~~~~ ^../include/asm-generic/io.h
:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~In file included from 
../drivers/mmc/core/regulator.c:9:
../arch/riscv/include/asm/io.hIn file included from ../include/linux/regulator/consumer.h::12035:
:In file included from ../include/linux/suspend.h55::5:
 In file included from note: ../include/linux/swap.h:expanded from macro 'outsl'9
:
In file included from ../include/linux/memcontrol.h:13:
In file included from ../include/linux/cgroup.h:26:
  In file included from 120../include/linux/kernel_stat.h: | 8#:
In file included from d../include/linux/interrupt.he:11f:
iIn file included from n../include/linux/hardirq.he: 11o:
uIn file included from t./arch/riscv/include/generated/asm/hardirq.hs:l1(:
aIn file included from d../include/asm-generic/hardirq.hd:r17,:
 In file included from b../include/linux/irq.hu:f20f:
eIn file included from r../include/linux/io.h,: 14c:
oIn file included from u../arch/riscv/include/asm/io.hn:t136):
 ../include/asm-generic/io.h_:_847o:u2t:s lwarning: (performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]P
CI_IOB  A847S | E         o+u t(sald(dard)d,r ,b ubfuffefre,r ,c ocuonutn)t
)      ;| 
                                           ~~~~~~~~~~ ^      
|         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/of/platform.o
7 warnings generated.
  CC      drivers/mmc/core/block.o
  CC      drivers/of/property.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/mmc/core/queue.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/of/kobj.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/of/fdt.o
7 warnings generated.
  AR      drivers/platform/built-in.a
  AR      drivers/hwtracing/intel_th/built-in.a
7 warnings generated.
  AR      drivers/android/built-in.a
  DTC     drivers/of/empty_root.dtb
  CC      drivers/of/fdt_address.o
  AR      drivers/mmc/core/built-in.a
  CC      drivers/of/address.o
  CC      drivers/mmc/host/mmc_spi.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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/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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
  CC      drivers/of/irq.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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  CC      drivers/of/of_reserved_mem.o
7 warnings generated.
  CC      drivers/mmc/host/of_mmc_spi.o
7 warnings generated.
  WRAP    drivers/of/empty_root.dtb.S
  AS      drivers/of/empty_root.dtb.o
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      drivers/of/built-in.a
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:804:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  804 |         insb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:812:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  812 |         insw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:820:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  820 |         insl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:829:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  829 |         outsb(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:838:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  838 |         outsw(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:847:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
  847 |         outsl(addr, buffer, count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
../arch/riscv/include/asm/io.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:1175:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
 1175 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
      |                                                   ~~~~~~~~~~ ^
7 warnings generated.
  AR      drivers/mmc/host/built-in.a
  AR      drivers/mmc/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'