Hi Amy, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.14-rc1 next-20210715] [cannot apply to pavel-linux-leds/for-next wireless-drivers-next/master wireless-drivers/master] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Amy-Parker/leds-change-led_brigh... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git dd9c7df94c1b23feacd54112f33ad95d93f64533 config: arm-randconfig-r023-20210715 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 0e49c54a8cbd3e779e5526a5888c683c01cc3c50) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/0day-ci/linux/commit/b14a971f1045205d49d9d001f33d33afd... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Amy-Parker/leds-change-led_brightness-definition-from-enum-to-typedef/20210716-052140 git checkout b14a971f1045205d49d9d001f33d33afdd8208f9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm 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 >>): In file included from drivers/media/v4l2-core/v4l2-flash-led-class.c:15: led_brightness; ^~~~~~~~~~~~~~ 1 warning generated. vim +18 include/media/v4l2-flash-led-class.h 14 15 struct led_classdev_flash; 16 struct led_classdev; 17 struct v4l2_flash; 19 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org