Hi Tatsuyuki, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm/drm-next] [also build test ERROR on drm-intel/for-linux-next drm-tip/drm-tip drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next v5.16-rc5 next-20211217] [cannot apply to airlied/drm-next] [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/Tatsuyuki-Ishi/drm-make-drm_sync... base: git://anongit.freedesktop.org/drm/drm drm-next config: x86_64-randconfig-a016-20211218 (https://download.01.org/0day-ci/archive/20211219/202112191223.dorzSdCu-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 4c9e31a4814592bbda7153833e46728dc7b21100) 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://github.com/0day-ci/linux/commit/d0e29bdb6f8cd1a9042e34c8330354389... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Tatsuyuki-Ishi/drm-make-drm_syncobj_array_wait-use-the-range-hrtimer-feature/20211218-222016 git checkout d0e29bdb6f8cd1a9042e34c833035438900bf332 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org