Hi Hanjun, I love your patch! Perhaps something to improve: [auto build test WARNING on pm/linux-next] [also build test WARNING on v5.9-rc4 next-20200903] [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/Hanjun-Guo/Cleanups-for-ACPI-APD-driver/20200907-170548 base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next config: x86_64-randconfig-r021-20200907 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project ab68517e6b7e51b84c4b0e813a30258ec1ce5da5) 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 # 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@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/acpi/acpi_apd.c:250:13: warning: no previous prototype for function 'acpi_apd_init' [-Wmissing-prototypes] void __init acpi_apd_init(void) ^ drivers/acpi/acpi_apd.c:250:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void __init acpi_apd_init(void) ^ static 1 warning generated. # https://github.com/0day-ci/linux/commit/a8b5a7197395679505a8a3126b829495abe2ae13 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Hanjun-Guo/Cleanups-for-ACPI-APD-driver/20200907-170548 git checkout a8b5a7197395679505a8a3126b829495abe2ae13 vim +/acpi_apd_init +250 drivers/acpi/acpi_apd.c 92082a8886f30a Ken Xue 2015-02-06 249 92082a8886f30a Ken Xue 2015-02-06 @250 void __init acpi_apd_init(void) --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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