Hi Kiran, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on bluetooth-next/master] [also build test WARNING on v5.7 next-20200611] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Kiran-K/Add-support-for-new-gene... base: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master config: x86_64-allyesconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project bc2b70982be8f5250cd0082a7190f8b417bd4dfe) 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 >>, old ones prefixed by <<): void btintel_boot_info(struct hci_dev *hdev, ^ drivers/bluetooth/btintel.c:229:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void btintel_boot_info(struct hci_dev *hdev, ^ static void btintel_boot_info_tlv(struct hci_dev *hdev, ^ drivers/bluetooth/btintel.c:252:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void btintel_boot_info_tlv(struct hci_dev *hdev, ^ static 2 warnings generated. vim +/btintel_boot_info +229 drivers/bluetooth/btintel.c 228 230 struct intel_version_tlv *ver) 231 { 232 const char *variant; 233 234 switch (ver->img_type) { 235 case 0x01: 236 variant = "Bootloader"; 237 break; 238 case 0x03: 239 variant = "Firmware"; 240 break; 241 default: 242 bt_dev_err(hdev, "Unsupported image type %x", ver->img_type); 243 return; 244 } 245 246 bt_dev_info(hdev, "%s timestamp %u.%u buildtype %u build %u", 247 variant, 2000 + (ver->timestamp >> 8), 248 ver->timestamp & 0xff, ver->build_type, ver->build_num); 249 } 250 EXPORT_SYMBOL_GPL(btintel_boot_info); 251 253 struct intel_version_tlv *ver) 254 { 255 bt_dev_info(hdev, "Device revision is %u", 256 ver->dev_rev_id); 257 258 bt_dev_info(hdev, "Secure boot is %s", 259 ver->secure_boot ? "enabled" : "disabled"); 260 261 bt_dev_info(hdev, "OTP lock is %s", 262 ver->otp_lock ? "enabled" : "disabled"); 263 264 bt_dev_info(hdev, "API lock is %s", 265 ver->api_lock ? "enabled" : "disabled"); 266 267 bt_dev_info(hdev, "Debug lock is %s", 268 ver->debug_lock ? "enabled" : "disabled"); 269 270 bt_dev_info(hdev, "Minimum firmware build %u week %u %u", 271 ver->min_fw_build_nn, ver->min_fw_build_cw, 272 2000 + ver->min_fw_build_yy); 273 } 274 EXPORT_SYMBOL_GPL(btintel_boot_info_tlv); 275 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org