Hi Deren, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on wireless-drivers-next/master] [also build test WARNING on wireless-drivers/master v5.13-rc6 next-20210615] [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/Deren-Wu/mt76-mt7921-introduce-P... base: https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-ne... master config: arc-allyesconfig (attached as .config) compiler: arceb-elf-gcc (GCC) 9.3.0 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/ed4b68aa3d20be1f8b2bfa305e1cba6f0... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Deren-Wu/mt76-mt7921-introduce-PCIe-ASPM-support-L0s-L1-L1ss/20210616-142942 git checkout ed4b68aa3d20be1f8b2bfa305e1cba6f0fac0ef7 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 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 >>): 151 | void mt7921_pci_enable_aspm(struct pci_dev *pdev) | ^~~~~~~~~~~~~~~~~~~~~~ vim +/mt7921_pci_enable_aspm +151 drivers/net/wireless/mediatek/mt76/mt7921/pci.c 150 152 { 153 mt7921_pci_config_L1ss(pdev, true); 154 mt7921_pci_config_L1(pdev, true); 155 } 156 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org