Hi Venkateswara, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on kvalo-ath/ath-next] [cannot apply to wireless-next/main wireless/main jberg-mac80211-next/master jberg-mac80211/master v5.17-rc3 next-20220211] [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/Venkateswara-Naralasetty/ath11k-... base: https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git ath-next config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20220213/202202130103.qvrDOuTL-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project f6685f774697c85d6a352dcea013f46a99f9fe31) 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/14cd77b4e3109da2eb6b3350164015385... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Venkateswara-Naralasetty/ath11k-add-single-shot-periodic-CFR-capture-support-for-IPQ8074/20220211-230911 git checkout 14cd77b4e3109da2eb6b33501640153852c5d2a7 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/net/wireless/ath/ath11k/ drivers/platform/x86/ 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 >>): case ATH11K_CFR_PREAMBLE_TYPE_HT: ^ drivers/net/wireless/ath/ath11k/cfr.c:40:2: note: insert '__attribute__((fallthrough));' to silence this warning case ATH11K_CFR_PREAMBLE_TYPE_HT: ^ __attribute__((fallthrough)); drivers/net/wireless/ath/ath11k/cfr.c:40:2: note: insert 'break;' to avoid fall-through case ATH11K_CFR_PREAMBLE_TYPE_HT: ^ break; drivers/net/wireless/ath/ath11k/cfr.c:515:6: warning: no previous prototype for function 'ath11k_cfr_ring_free' [-Wmissing-prototypes] void ath11k_cfr_ring_free(struct ath11k *ar) ^ drivers/net/wireless/ath/ath11k/cfr.c:515:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void ath11k_cfr_ring_free(struct ath11k *ar) ^ static 2 warnings generated. vim +40 drivers/net/wireless/ath/ath11k/cfr.c 18 19 static int cfr_calculate_tones_from_dma_hdr(struct ath11k_cfir_dma_hdr *hdr) 20 { 21 u8 bw = FIELD_GET(CFIR_DMA_HDR_INFO1_UPLOAD_PKT_BW, hdr->info1); 22 u8 preamble = FIELD_GET(CFIR_DMA_HDR_INFO1_PREAMBLE_TYPE, hdr->info1); 23 24 switch (preamble) { 25 case ATH11K_CFR_PREAMBLE_TYPE_LEGACY: 26 case ATH11K_CFR_PREAMBLE_TYPE_VHT: 27 switch (bw) { 28 case 0: 29 return TONES_IN_20MHZ; 30 case 1: /* DUP40/VHT40 */ 31 return TONES_IN_40MHZ; 32 case 2: /* DUP80/VHT80 */ 33 return TONES_IN_80MHZ; 34 case 3: /* DUP160/VHT160 */ 35 return TONES_IN_160MHZ; 36 default: 37 break; 38 } 39 41 switch (bw) { 42 case 0: 43 return TONES_IN_20MHZ; 44 case 1: 45 return TONES_IN_40MHZ; 46 } 47 } 48 49 return TONES_INVALID; 50 } 51 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org