Hi Keguang, kernel test robot noticed the following build errors: [auto build test ERROR on cf3be7e82b129ed34f811f116f2b113f6299d449] url: https://github.com/intel-lab-lkp/linux/commits/Keguang-Zhang/dt-bindings-watchdog-Add-Loongson-1-watchdog/20230407-190222 base: cf3be7e82b129ed34f811f116f2b113f6299d449 patch link: https://lore.kernel.org/r/20230407110025.516405-3-keguang.zhang%40gmail.com patch subject: [PATCH 2/2] watchdog: loongson1_wdt: Add DT support config: mips-loongson1c_defconfig (https://download.01.org/0day-ci/archive/20230408/202304081301.6Ukja1z0-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 2c57868e2e877f73c339796c3374ae660bb77f0d) 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 mips cross compiling tool for clang build # apt-get install binutils-mipsel-linux-gnu # https://github.com/intel-lab-lkp/linux/commit/26b8fbfd577b41f39d6af516ef7c49cbffa05117 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Keguang-Zhang/dt-bindings-watchdog-Add-Loongson-1-watchdog/20230407-190222 git checkout 26b8fbfd577b41f39d6af516ef7c49cbffa05117 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202304081301.6Ukja1z0-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> drivers/watchdog/loongson1_wdt.c:158:21: error: use of undeclared identifier 'ls1x_wdt_dt_ids' .of_match_table = ls1x_wdt_dt_ids, ^ 1 error generated. vim +/ls1x_wdt_dt_ids +158 drivers/watchdog/loongson1_wdt.c 153 154 static struct platform_driver ls1x_wdt_driver = { 155 .probe = ls1x_wdt_probe, 156 .driver = { 157 .name = "ls1x-wdt", > 158 .of_match_table = ls1x_wdt_dt_ids, 159 }, 160 }; 161 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests