[android-common:android12-kiwi-5.10 150/150] kernel/events/ring_buffer.c:22:9: sparse: sparse: incorrect type in assignment (different base types)

[kernel test robot <lkp@intel.com>]

tree:   https://android.googlesource.com/kernel/common android12-kiwi-5.10
head:   77354ed8fe97f2e66ce08870a5cd54e222a15c53
commit: ef0398cf5cf150364839ffea0b0dd7c71edf2e62 [150/150] perf/ring_buffer: Allow the EPOLLRDNORM flag for poll
config: arm-randconfig-r133-20250727 (https://download.01.org/0day-ci/archive/20250901/202509011229.F49FqqMo-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.5.0
reproduce: (https://download.01.org/0day-ci/archive/20250901/202509011229.F49FqqMo-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202509011229.F49FqqMo-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> kernel/events/ring_buffer.c:22:9: sparse: sparse: incorrect type in assignment (different base types) @@     expected int volatile @@     got restricted __poll_t @@
   kernel/events/ring_buffer.c:22:9: sparse:     expected int volatile
   kernel/events/ring_buffer.c:22:9: sparse:     got restricted __poll_t
   kernel/events/ring_buffer.c:170:14: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/events/ring_buffer.c:170:14: sparse:    struct perf_buffer [noderef] __rcu *
   kernel/events/ring_buffer.c:170:14: sparse:    struct perf_buffer *
   kernel/events/ring_buffer.c:170:14: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/events/ring_buffer.c:170:14: sparse:    struct perf_buffer [noderef] __rcu *
   kernel/events/ring_buffer.c:170:14: sparse:    struct perf_buffer *
   kernel/events/ring_buffer.c:170:14: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/events/ring_buffer.c:170:14: sparse:    struct perf_buffer [noderef] __rcu *
   kernel/events/ring_buffer.c:170:14: sparse:    struct perf_buffer *

vim +22 kernel/events/ring_buffer.c

    19	
    20	static void perf_output_wakeup(struct perf_output_handle *handle)
    21	{
  > 22		atomic_set(&handle->rb->poll, EPOLLIN | EPOLLRDNORM);
    23	
    24		handle->event->pending_wakeup = 1;
    25		irq_work_queue(&handle->event->pending);
    26	}
    27	

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