Hi Marek, I love your patch! Perhaps something to improve: [auto build test WARNING on drm/drm-next] [also build test WARNING on drm-exynos/exynos-drm-next drm-intel/for-linux-next drm-tip/drm-tip tegra-drm/drm/tegra/for-next v5.18-rc7] [cannot apply to airlied/drm-next] [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] url: https://github.com/intel-lab-lkp/linux/commits/Marek-Vasut/dt-bindings-lcdif-Add-compatible-for-i-MX8MP/20220519-084546 base: git://anongit.freedesktop.org/drm/drm drm-next config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220519/202205191500.XkbwDucz-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.2.0-20) 11.2.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/85568e7c941f3751b0a6da9e7f14ee9b5593260b git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Marek-Vasut/dt-bindings-lcdif-Add-compatible-for-i-MX8MP/20220519-084546 git checkout 85568e7c941f3751b0a6da9e7f14ee9b5593260b # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/mxsfb/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/gpu/drm/mxsfb/lcdif_kms.c:461:18: warning: 'lcdif_overlay_plane_formats' defined but not used [-Wunused-const-variable=] 461 | static const u32 lcdif_overlay_plane_formats[] = { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/lcdif_overlay_plane_formats +461 drivers/gpu/drm/mxsfb/lcdif_kms.c 460 > 461 static const u32 lcdif_overlay_plane_formats[] = { 462 DRM_FORMAT_XRGB4444, 463 DRM_FORMAT_ARGB4444, 464 DRM_FORMAT_XRGB1555, 465 DRM_FORMAT_ARGB1555, 466 DRM_FORMAT_RGB565, 467 DRM_FORMAT_XRGB8888, 468 DRM_FORMAT_ARGB8888, 469 }; 470 -- 0-DAY CI Kernel Test Service https://01.org/lkp