Hi Meng, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.15 next-20211112] [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/Meng-Li/net-stmmac-socfpga-add-r... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 5833291ab6de9c3e2374336b51c814e515e8f3a5 config: arm-defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 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/3fee8d6a97c77407e030c5831bed79249... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Meng-Li/net-stmmac-socfpga-add-runtime-suspend-resume-callback-for-stratix10-platform/20211112-163612 git checkout 3fee8d6a97c77407e030c5831bed7924958ad53f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 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 >>): 506 | const static struct dev_pm_ops socfpga_dwmac_pm_ops = { | ^~~~~ vim +/static +506 drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c 505 507 SET_SYSTEM_SLEEP_PM_OPS(stmmac_suspend, socfpga_dwmac_resume) 508 SET_RUNTIME_PM_OPS(socfpga_dwmac_runtime_suspend, socfpga_dwmac_runtime_resume, NULL) 509 }; 510 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org