[kbuild-all] drivers/mfd/khadas-mcu.c:125:34: warning: unused variable 'khadas_mcu_of_match'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 4b6c093e21d36bede0fd88fd0aeb3b03647260e4 commit: 6c27219e34911601955b72c754adfc11c527ba7b mfd: Add support for the Khadas System control Microcontroller date: 8 weeks ago config: x86_64-randconfig-r034-20200816 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project ab9fc8bae805c785066779e76e7846aabad5609e) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git checkout 6c27219e34911601955b72c754adfc11c527ba7b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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 >>): static const struct of_device_id khadas_mcu_of_match[] = { ^ 1 warning generated. # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 6c27219e34911601955b72c754adfc11c527ba7b vim +/khadas_mcu_of_match +125 drivers/mfd/khadas-mcu.c 124 126 { .compatible = "khadas,mcu", }, 127 {}, 128 }; 129 MODULE_DEVICE_TABLE(of, khadas_mcu_of_match); 130 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org