tree: https://gitlab.freedesktop.org/agd5f/linux.git amd-staging-drm-next head: 60a5afab4901326723cee1d232e64ed9af018d35 commit: 429f534054bc2b5f21e8a73433f455247d48fb1d [360/396] drm/amd/display: Fixed EdidUtility build errors config: s390-randconfig-r036-20210730 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project c49df15c278857adecd12db6bb1cdc96885f7079) 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 # install s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu git remote add agd5f https://gitlab.freedesktop.org/agd5f/linux.git git fetch --no-tags agd5f amd-staging-drm-next git checkout 429f534054bc2b5f21e8a73433f455247d48fb1d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "dc_dsc_stream_bandwidth_in_kbps" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org