Re: [PATCH 02/19] drm: Pass pixel_format+modifier directly to drm_get_format_info()

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

Hi Ville,

kernel test robot noticed the following build warnings:

[auto build test WARNING on linus/master]
[also build test WARNING on v6.15-rc1 next-20250410]
[cannot apply to drm-exynos/exynos-drm-next tegra/for-next rmk-arm/drm-armada-devel rmk-arm/drm-armada-fixes]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Ville-Syrjala/drm-Pass-pixel_format-modifier-to-get_format_info/20250411-005845
base:   linus/master
patch link:    https://lore.kernel.org/r/20250410163218.15130-3-ville.syrjala%40linux.intel.com
patch subject: [PATCH 02/19] drm: Pass pixel_format+modifier directly to drm_get_format_info()
config: hexagon-randconfig-001-20250411 (https://download.01.org/0day-ci/archive/20250411/202504110343.FEc4bNDr-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250411/202504110343.FEc4bNDr-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/202504110343.FEc4bNDr-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/drm_fourcc.c:394: warning: Function parameter or struct member 'pixel_format' not described in 'drm_get_format_info'
>> drivers/gpu/drm/drm_fourcc.c:394: warning: Function parameter or struct member 'modifier' not described in 'drm_get_format_info'
>> drivers/gpu/drm/drm_fourcc.c:394: warning: Excess function parameter 'mode_cmd' description in 'drm_get_format_info'


vim +394 drivers/gpu/drm/drm_fourcc.c

84770cc24f3a51 Laurent Pinchart 2016-10-18  381  
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  382  /**
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  383   * drm_get_format_info - query information for a given framebuffer configuration
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  384   * @dev: DRM device
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  385   * @mode_cmd: metadata from the userspace fb creation request
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  386   *
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  387   * Returns:
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  388   * The instance of struct drm_format_info that describes the pixel format, or
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  389   * NULL if the format is unsupported.
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  390   */
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  391  const struct drm_format_info *
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  392  drm_get_format_info(struct drm_device *dev,
9a77ad08811ab1 Ville Syrjälä    2025-04-10  393  		    u32 pixel_format, u64 modifier)
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21 @394  {
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  395  	const struct drm_format_info *info = NULL;
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  396  
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  397  	if (dev->mode_config.funcs->get_format_info)
9a77ad08811ab1 Ville Syrjälä    2025-04-10  398  		info = dev->mode_config.funcs->get_format_info(pixel_format,
9a77ad08811ab1 Ville Syrjälä    2025-04-10  399  							       modifier);
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  400  
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  401  	if (!info)
9a77ad08811ab1 Ville Syrjälä    2025-04-10  402  		info = drm_format_info(pixel_format);
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  403  
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  404  	return info;
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  405  }
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  406  EXPORT_SYMBOL(drm_get_format_info);
6a0f9ebfc5e753 Ville Syrjälä    2017-03-21  407  

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