[superm1:superm1/brightness-changes-6.15 3/7] drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:4694:13: error: 'caps' undeclared

[superm1:superm1/brightness-changes-6.15 3/7] drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:4694:13: error: 'caps' undeclared

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/superm1/linux.git superm1/brightness-changes-6.15
head:   e1a5d02a5851574c4f09e3d483c473555e69a453
commit: 88e76b926b193764694367e3411d004d5db78ccb [3/7] drm/amd/display: Avoid operating on copies of backlight caps
config: sparc-allmodconfig (https://download.01.org/0day-ci/archive/20250307/202503072204.9LZTFcpb-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250307/202503072204.9LZTFcpb-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/202503072204.9LZTFcpb-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c: In function 'amdgpu_dm_update_backlight_caps':
>> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:4694:13: error: 'caps' undeclared (first use in this function)
    4694 |         if (caps->aux_support)
         |             ^~~~
   drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:4694:13: note: each undeclared identifier is reported only once for each function it appears in


vim +/caps +4694 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c

  4662	
  4663	static void amdgpu_dm_update_backlight_caps(struct amdgpu_display_manager *dm,
  4664						    int bl_idx)
  4665	{
  4666	#if defined(CONFIG_ACPI)
  4667		struct amdgpu_dm_backlight_caps *caps = &dm->backlight_caps[bl_idx];
  4668	
  4669		if (caps->caps_valid)
  4670			return;
  4671	
  4672		amdgpu_acpi_get_backlight_caps(caps);
  4673	
  4674		/* validate the firmware value is sane */
  4675		if (caps->caps_valid) {
  4676			int spread = caps->max_input_signal - caps->min_input_signal;
  4677	
  4678			if (caps->max_input_signal > AMDGPU_DM_DEFAULT_MAX_BACKLIGHT ||
  4679			    caps->min_input_signal < 0 ||
  4680			    spread > AMDGPU_DM_DEFAULT_MAX_BACKLIGHT ||
  4681			    spread < AMDGPU_DM_MIN_SPREAD) {
  4682				DRM_DEBUG_KMS("DM: Invalid backlight caps: min=%d, max=%d\n",
  4683					      caps->min_input_signal, caps->max_input_signal);
  4684				caps->caps_valid = false;
  4685			}
  4686		}
  4687	
  4688		if (!caps->caps_valid) {
  4689			caps->min_input_signal = AMDGPU_DM_DEFAULT_MIN_BACKLIGHT;
  4690			caps->max_input_signal = AMDGPU_DM_DEFAULT_MAX_BACKLIGHT;
  4691			caps->caps_valid = true;
  4692		}
  4693	#else
> 4694		if (caps->aux_support)
  4695			return;
  4696	
  4697		caps->min_input_signal = AMDGPU_DM_DEFAULT_MIN_BACKLIGHT;
  4698		caps->max_input_signal = AMDGPU_DM_DEFAULT_MAX_BACKLIGHT;
  4699		caps->caps_valid = true;
  4700	#endif
  4701	}
  4702	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki