tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.15 head: f0fdc40dcd25913abb050bb911839d8bdf7dc2dc commit: 01df362ccd59d9bfcdad41104d89b4db699a97c5 [1424/2774] CHROMIUM: rtw88: vndcmd: sar: Apply SAR power limit via vendor command config: ia64-buildonly-randconfig-r004-20211207 (https://download.01.org/0day-ci/archive/20211209/202112090009.ghZDVWJw-lk...) compiler: ia64-linux-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 git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-5.15 git checkout 01df362ccd59d9bfcdad41104d89b4db699a97c5 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=ia64 SHELL=/bin/bash drivers/net/wireless/realtek/rtw88/ 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 >>): 127 | void rtw_register_vndcmd(struct ieee80211_hw *hw) | ^~~~~~~~~~~~~~~~~~~ vim +/rtw_register_vndcmd +127 drivers/net/wireless/realtek/rtw88/vndcmd.c 126 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org