tree: https://github.com/jimc/linux.git dd-drm-4d head: 6ffb90a167c272a6a58f37bb5386e0cdcb7ba782 commit: 588c1db26379d2495dc3ed0127e9841ca9620af8 [7/9] drm/print: add choice to use dynamic debug in drm-debug config: x86_64-randconfig-a016-20210810 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d39ebdae674c8efc84ebe8dc32716ec353220530) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/jimc/linux/commit/588c1db26379d2495dc3ed0127e9841ca962... git remote add jimc https://github.com/jimc/linux.git git fetch --no-tags jimc dd-drm-4d git checkout 588c1db26379d2495dc3ed0127e9841ca9620af8 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): DRM_DEBUG_DESC, ^ drivers/gpu/drm/drm_print.c:47:24: note: expanded from macro 'DRM_DEBUG_DESC' #define DRM_DEBUG_DESC \ ^ drivers/gpu/drm/drm_print.c:60:1: warning: declaration specifier missing, defaulting to 'int' DEFINE_DYNAMIC_DEBUG_CATEGORIES(debug, __drm_debug, ^ int DEFINE_DYNAMIC_DEBUG_CATEGORIES(debug, __drm_debug, ^ 1 warning and 2 errors generated. vim +61 drivers/gpu/drm/drm_print.c 59 62 _DD_cat_(DRM_DBG_CAT_CORE), 63 _DD_cat_(DRM_DBG_CAT_DRIVER), 64 _DD_cat_(DRM_DBG_CAT_KMS), 65 _DD_cat_(DRM_DBG_CAT_PRIME), 66 _DD_cat_(DRM_DBG_CAT_ATOMIC), 67 _DD_cat_(DRM_DBG_CAT_VBL), 68 _DD_cat_(DRM_DBG_CAT_STATE), 69 _DD_cat_(DRM_DBG_CAT_LEASE), 70 _DD_cat_(DRM_DBG_CAT_DP), 71 _DD_cat_(DRM_DBG_CAT_DRMRES)); 72 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org