Hi Carl, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on ath6kl/ath-next] [cannot apply to mac80211-next/master mac80211/master v5.9-rc6 next-20200922] [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/Carl-Huang/nl80211-add-common-AP... base: https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git ath-next config: x86_64-randconfig-a012-20200922 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 6a6b06f5262bb96523eceef4a42fe8e60ae2a630) 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(a)intel.com&gt; All warnings (new ones prefixed by >>): int ath10k_mac_set_sar_power(struct ath10k *ar) ^ drivers/net/wireless/ath/ath10k/mac.c:2906:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int ath10k_mac_set_sar_power(struct ath10k *ar) ^ static 1 warning generated. # https://github.com/0day-ci/linux/commit/194580acc67fccc13b7f388334db0ec31... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Carl-Huang/nl80211-add-common-API-to-configure-SAR-power-limitations/20200922-135108 git checkout 194580acc67fccc13b7f388334db0ec31897ab5a vim +/ath10k_mac_set_sar_power +2906 drivers/net/wireless/ath/ath10k/mac.c 2905 2907 { 2908 int ret; 2909 2910 if (!ar->hw_params.dynamic_sar_support) 2911 return 0; 2912 2913 if (ar->tx_power_2g_limit == 0 || ar->tx_power_5g_limit == 0) 2914 return 0; 2915 2916 if (!ath10k_mac_is_connected(ar)) 2917 return 0; 2918 2919 ret = ath10k_wmi_pdev_set_param(ar, 2920 ar->wmi.pdev_param->txpower_limit2g, 2921 ar->tx_power_2g_limit); 2922 if (ret) { 2923 ath10k_warn(ar, "failed to set 2.4G txpower %d: %d\n", 2924 ar->tx_power_2g_limit, ret); 2925 return ret; 2926 } 2927 2928 ret = ath10k_wmi_pdev_set_param(ar, 2929 ar->wmi.pdev_param->txpower_limit5g, 2930 ar->tx_power_5g_limit); 2931 if (ret) { 2932 ath10k_warn(ar, "failed to set 5G txpower %d: %d\n", 2933 ar->tx_power_5g_limit, ret); 2934 return ret; 2935 } 2936 2937 ath10k_dbg(ar, ATH10K_DBG_MAC, "set txpower 2G:%d, 5G:%d successfully\n", 2938 ar->tx_power_2g_limit, ar->tx_power_5g_limit); 2939 2940 return ret; 2941 } 2942 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org