tree:   https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android13-5.15
head:   754bb029c85fb4b18d198216540f75e635dde8d4
commit: c7b6c40553f8ae90617595cc851e19520fbd945b [2837/5636] FROMLIST: tracing: Add register read/write tracing support
config: arm64-randconfig-s053-20221026
compiler: aarch64-linux-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://github.com/ammarfaizi2/linux-block/commit/c7b6c40553f8ae90617595cc851e19520fbd945b
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android13-5.15
        git checkout c7b6c40553f8ae90617595cc851e19520fbd945b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kvm/hyp/nvhe/ kernel/trace/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

sparse warnings: (new ones prefixed by >>)
   kernel/trace/trace_readwrite.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, include/trace/events/rwmmio.h):
>> include/trace/events/rwmmio.h:13:1: sparse: sparse: cast removes address space '__iomem' of expression
   include/trace/events/rwmmio.h:38:1: sparse: sparse: cast removes address space '__iomem' of expression
   include/trace/events/rwmmio.h:63:1: sparse: sparse: cast removes address space '__iomem' of expression
   include/trace/events/rwmmio.h:85:1: sparse: sparse: cast removes address space '__iomem' of expression
   kernel/trace/trace_readwrite.c: note: in included file (through include/trace/perf.h, include/trace/define_trace.h, include/trace/events/rwmmio.h):
>> include/trace/events/rwmmio.h:13:1: sparse: sparse: cast removes address space '__iomem' of expression
   include/trace/events/rwmmio.h:38:1: sparse: sparse: cast removes address space '__iomem' of expression
   include/trace/events/rwmmio.h:63:1: sparse: sparse: cast removes address space '__iomem' of expression
   include/trace/events/rwmmio.h:85:1: sparse: sparse: cast removes address space '__iomem' of expression
   kernel/trace/trace_readwrite.c:16:6: sparse: sparse: symbol 'log_write_mmio' was not declared. Should it be static?
   kernel/trace/trace_readwrite.c:24:6: sparse: sparse: symbol 'log_post_write_mmio' was not declared. Should it be static?
   kernel/trace/trace_readwrite.c:32:6: sparse: sparse: symbol 'log_read_mmio' was not declared. Should it be static?
   kernel/trace/trace_readwrite.c:40:6: sparse: sparse: symbol 'log_post_read_mmio' was not declared. Should it be static?

vim +/__iomem +13 include/trace/events/rwmmio.h

    12	
  > 13	TRACE_EVENT(rwmmio_write,
    14	
    15		TP_PROTO(unsigned long caller, u64 val, u8 width, volatile void __iomem *addr),
    16	
    17		TP_ARGS(caller, val, width, addr),
    18	
    19		TP_STRUCT__entry(
    20			__field(u64, caller)
    21			__field(u64, val)
    22			__field(u64, addr)
    23			__field(u8, width)
    24		),
    25	
    26		TP_fast_assign(
    27			__entry->caller = caller;
    28			__entry->val = val;
    29			__entry->addr = (unsigned long)(void *)addr;
    30			__entry->width = width;
    31		),
    32	
    33		TP_printk("%pS width=%d val=%#llx addr=%#llx",
    34			(void *)(unsigned long)__entry->caller, __entry->width,
    35			__entry->val, __entry->addr)
    36	);
    37	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp