CC: linux-kernel(a)vger.kernel.org TO: Lee Jones <lee.jones(a)linaro.org&gt; CC: Alex Deucher <alexander.deucher(a)amd.com&gt; Hi Lee, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: ad347abe4a9876b1f65f408ab467137e88f77eb4 commit: d56631c58daea614dfb67cc0bf45f5f9f958bfd8 drm/amd/display/dc/dce/dce_i2c_sw: Make a bunch of local functions static date: 5 months ago config: x86_64-randconfig-a003-20210612 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project d2012d965d60c3258b3a69d024491698f8aec386) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout d56631c58daea614dfb67cc0bf45f5f9f958bfd8 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org