Hi Mike, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: fe91c4725aeed35023ba4f7a1e1adfebb6878c23 commit: cd900f181ad6b548a8feded5dd224f789f09b1c6 power/supply: Add ltc4162-l-charger date: 10 months ago config: x86_64-randconfig-a002-20210928 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dc6e8dfdfe7efecfda318d43a06fae18b40eb498) 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cd900f181ad6b548a8feded5dd224f789f09b1c6 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout cd900f181ad6b548a8feded5dd224f789f09b1c6 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/power/supply/ltc4162-l-charger.c:912:34: warning: unused variable 'ltc4162l_of_match' [-Wunused-const-variable] static const struct of_device_id ltc4162l_of_match[] = { ^ 1 warning generated. vim +/ltc4162l_of_match +912 drivers/power/supply/ltc4162-l-charger.c 911 > 912 static const struct of_device_id ltc4162l_of_match[] = { 913 { .compatible = "lltc,ltc4162-l", }, 914 { }, 915 }; 916 MODULE_DEVICE_TABLE(of, ltc4162l_of_match); 917 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org