Hi Sai, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on bluetooth-next/master] [also build test WARNING on linux/master linus/master v5.16-rc4 next-20211208] [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/Sai-Teja-Aluvala/Bluetooth-btqca-sequential-validation/20211208-162834 base: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master config: x86_64-randconfig-a015-20211207 (https://download.01.org/0day-ci/archive/20211208/202112082116.coCA1rOT-lkp@xxxxxxxxx/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a) 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/1d58d86c5374c4c82aa1ec8638036667c114f83e git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Sai-Teja-Aluvala/Bluetooth-btqca-sequential-validation/20211208-162834 git checkout 1d58d86c5374c4c82aa1ec8638036667c114f83e # 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=x86_64 SHELL=/bin/bash drivers/bluetooth/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/bluetooth/btqca.c:144:5: warning: no previous prototype for function 'qca_send_patch_config_cmd' [-Wmissing-prototypes] int qca_send_patch_config_cmd(struct hci_dev *hdev, enum qca_btsoc_type soc_type) ^ drivers/bluetooth/btqca.c:144:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int qca_send_patch_config_cmd(struct hci_dev *hdev, enum qca_btsoc_type soc_type) ^ static 1 warning generated. vim +/qca_send_patch_config_cmd +144 drivers/bluetooth/btqca.c 143 > 144 int qca_send_patch_config_cmd(struct hci_dev *hdev, enum qca_btsoc_type soc_type) 145 { 146 struct sk_buff *skb; 147 int err = 0; 148 u8 cmd[5] = {EDL_PATCH_CONFIG_CMD, 0x01, 0, 0, 0}; 149 u8 rlen = 0x02; 150 struct edl_event_hdr *edl; 151 u8 rtype = EDL_PATCH_CONFIG_CMD; 152 153 bt_dev_dbg(hdev, "QCA Patch config"); 154 155 skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CONFIG_CMD_LEN, 156 cmd, HCI_EV_VENDOR, HCI_INIT_TIMEOUT); 157 if (IS_ERR(skb)) { 158 err = PTR_ERR(skb); 159 bt_dev_err(hdev, "Sending QCA Patch config failed (%d)", err); 160 return err; 161 } 162 if (skb->len != rlen) { 163 bt_dev_err(hdev, "QCA Patch config cmd size mismatch len %d", skb->len); 164 err = -EILSEQ; 165 goto out; 166 } 167 edl = (struct edl_event_hdr *)(skb->data); 168 if (!edl) { 169 bt_dev_err(hdev, "QCA Patch config with no header"); 170 err = -EILSEQ; 171 goto out; 172 } 173 if (edl->cresp != EDL_PATCH_CONFIG_RES_EVT || edl->rtype != rtype) { 174 bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp, 175 edl->rtype); 176 err = -EIO; 177 goto out; 178 } 179 out: 180 kfree(skb); 181 if (err) 182 bt_dev_err(hdev, "QCA Patch config cmd failed (%d)", err); 183 184 return err; 185 } 186 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx