Hi Kieran, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on wireless/main] [also build test WARNING on linus/master v6.0-rc3 next-20220830] [cannot apply to wireless-next/main] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Kieran-Frewen/Additional-Support-for-802-11ah-S1G/20220830-102217 base: https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless.git main config: arm-colibri_pxa270_defconfig (https://download.01.org/0day-ci/archive/20220830/202208301755.3ARl5XbS-lkp@xxxxxxxxx/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project c7df82e4693c19e3fd2e25c83eb04d9deb7b7b59) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/intel-lab-lkp/linux/commit/7c0e7a45e22911c6e1b16ecdce1a4d6022fd66ee git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Kieran-Frewen/Additional-Support-for-802-11ah-S1G/20220830-102217 git checkout 7c0e7a45e22911c6e1b16ecdce1a4d6022fd66ee # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash net/wireless/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> net/wireless/util.c:137:5: warning: no previous prototype for function 'ieee80211_s1g_channel_to_freq_khz' [-Wmissing-prototypes] u32 ieee80211_s1g_channel_to_freq_khz(int chan) ^ net/wireless/util.c:137:1: note: declare 'static' if the function is not intended to be used outside of this translation unit u32 ieee80211_s1g_channel_to_freq_khz(int chan) ^ static 1 warning generated. -- >> net/wireless/reg.c:2597:33: warning: variable 'center_freq_khz' is uninitialized when used here [-Wuninitialized] reg_rule = freq_reg_info_regd(center_freq_khz, regd, bw); ^~~~~~~~~~~~~~~ net/wireless/reg.c:2586:25: note: initialize the variable 'center_freq_khz' to silence this warning u32 bw, center_freq_khz; ^ = 0 1 warning generated. vim +/ieee80211_s1g_channel_to_freq_khz +137 net/wireless/util.c 136 > 137 u32 ieee80211_s1g_channel_to_freq_khz(int chan) 138 { 139 u32 base = ieee80211_s1g_base_freq(chan); 140 141 if (!base) 142 return 0; 143 144 return (base + chan * 500); 145 } 146 EXPORT_SYMBOL(ieee80211_s1g_channel_to_freq_khz); 147 -- 0-DAY CI Kernel Test Service https://01.org/lkp