tree: https://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git devfreq-testing head: e09c72f15af2bbcf1ddc4d97e75d6400c9dda033 commit: a51aacab25198ecb21110c2a387f1e94bc3a2ebd [6/17] PM / devfreq: Add governor flags to clarify the features config: arm64-randconfig-r006-20200911 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 0448d11a06b451a63a8f60408fec613ad24801ba) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu git checkout a51aacab25198ecb21110c2a387f1e94bc3a2ebd # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 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 >>): .flag = DEVFREQ_GOV_FLAG_IMMUTABLE ^~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/devfreq/governor.h:55:38: note: expanded from macro 'DEVFREQ_GOV_FLAG_IMMUTABLE' #define DEVFREQ_GOV_FLAG_IMMUTABLE BIT(0) ^ include/vdso/bits.h:7:19: note: expanded from macro 'BIT' #define BIT(nr) (UL(1) << (nr)) ^ drivers/devfreq/tegra30-devfreq.c:768:10: note: previous initialization is here .flag = DEVFREQ_GOV_ATTR_COMMON ^~~~~~~~~~~~~~~~~~~~~~~ drivers/devfreq/governor.h:41:33: note: expanded from macro 'DEVFREQ_GOV_ATTR_COMMON' #define DEVFREQ_GOV_ATTR_COMMON (DEVFREQ_GOV_ATTR_NAME \ ^ 1 warning generated. # https://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git/commit/... git remote add chanwoo https://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git git fetch --no-tags chanwoo devfreq-testing git checkout a51aacab25198ecb21110c2a387f1e94bc3a2ebd vim +770 drivers/devfreq/tegra30-devfreq.c 765 766 static struct devfreq_governor tegra_devfreq_governor = { 767 .name = "tegra_actmon", 768 .flag = DEVFREQ_GOV_ATTR_COMMON 769 | DEVFREQ_GOV_ATTR_POLLING_INTERVAL, 771 | DEVFREQ_GOV_FLAG_IRQ_DRIVEN, 772 .get_target_freq = tegra_governor_get_target, 773 .event_handler = tegra_governor_event_handler, 774 }; 775 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org