Hi Maxime, I love your patch! Perhaps something to improve: [auto build test WARNING on drm/drm-next] [also build test WARNING on next-20211203] [cannot apply to drm-intel/for-linux-next anholt/for-next v5.16-rc3] [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/0day-ci/linux/commits/Maxime-Ripard/drm-vc4-hdmi-Yet-Another-Approach-to-HDMI-YUV-output/20211203-185623 base: git://anongit.freedesktop.org/drm/drm drm-next config: powerpc-randconfig-s031-20211203 (https://download.01.org/0day-ci/archive/20211204/202112040851.zYD2J0lK-lkp@xxxxxxxxx/config) compiler: powerpc-linux-gcc (GCC) 11.2.0 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-dirty # https://github.com/0day-ci/linux/commit/70ee339decc66c157b6c9c983e8cce172c323218 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Maxime-Ripard/drm-vc4-hdmi-Yet-Another-Approach-to-HDMI-YUV-output/20211203-185623 git checkout 70ee339decc66c157b6c9c983e8cce172c323218 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/gpu/drm/vc4/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/gpu/drm/vc4/vc4_hdmi.c:503:37: sparse: sparse: mixing different enum types: >> drivers/gpu/drm/vc4/vc4_hdmi.c:503:37: sparse: unsigned int enum vc4_hdmi_output_format >> drivers/gpu/drm/vc4/vc4_hdmi.c:503:37: sparse: unsigned int enum hdmi_colorspace vim +503 drivers/gpu/drm/vc4/vc4_hdmi.c 491 492 static void vc4_hdmi_avi_infoframe_colorspace(struct hdmi_avi_infoframe *frame, 493 enum vc4_hdmi_output_format fmt) 494 { 495 switch (fmt) { 496 case VC4_HDMI_OUTPUT_RGB: 497 fallthrough; 498 case VC4_HDMI_OUTPUT_YUV420: 499 fallthrough; 500 case VC4_HDMI_OUTPUT_YUV422: 501 fallthrough; 502 case VC4_HDMI_OUTPUT_YUV444: > 503 frame->colorspace = fmt; 504 break; 505 506 default: 507 break; 508 } 509 } 510 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx