Hi Zijun, Thank you for the patch! Yet something to improve: [auto build test ERROR on bluetooth-next/master] [also build test ERROR on linus/master v5.14-rc7 next-20210823] [cannot apply to linux/master bluetooth/master] [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/Zijun-Hu/Bluetooth-btusb-Add-sup... base: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master config: arc-allyesconfig (attached as .config) compiler: arceb-elf-gcc (GCC) 11.2.0 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/0e2a1544bcc7d3ffac1bd4c27614c8d89... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Zijun-Hu/Bluetooth-btusb-Add-support-using-different-nvm-for-variant-WCN6855-controller/20210823-170111 git checkout 0e2a1544bcc7d3ffac1bd4c27614c8d892933ed3 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/bluetooth/btusb.c: In function 'btusb_generate_qca_nvm_name': 3342 | snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x%s%s.bin", | ^~~~~~ | | | char ** In file included from include/linux/list.h:9, from include/linux/dmi.h:5, from drivers/bluetooth/btusb.c:9: include/linux/kernel.h:204:20: note: expected 'char *' but argument is of type 'char **' 204 | int snprintf(char *buf, size_t size, const char *fmt, ...); | ~~~~~~^~~ drivers/bluetooth/btusb.c:3347:34: error: passing argument 1 of 'snprintf' from incompatible pointer type [-Werror=incompatible-pointer-types] 3347 | snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x%s%s%04x.bin", | ^~~~~~ | | | char ** In file included from include/linux/list.h:9, from include/linux/dmi.h:5, from drivers/bluetooth/btusb.c:9: include/linux/kernel.h:204:20: note: expected 'char *' but argument is of type 'char **' 204 | int snprintf(char *buf, size_t size, const char *fmt, ...); | ~~~~~~^~~ drivers/bluetooth/btusb.c:3354:26: error: passing argument 1 of 'snprintf' from incompatible pointer type [-Werror=incompatible-pointer-types] 3354 | snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin", | ^~~~~~ | | | char ** In file included from include/linux/list.h:9, from include/linux/dmi.h:5, from drivers/bluetooth/btusb.c:9: include/linux/kernel.h:204:20: note: expected 'char *' but argument is of type 'char **' 204 | int snprintf(char *buf, size_t size, const char *fmt, ...); | ~~~~~~^~~ drivers/bluetooth/btusb.c: In function 'btusb_setup_qca_load_nvm': 3371 | btusb_generate_qca_nvm_name(&fwname, sizeof(fwname), ver, "_", "gf"); | ^~~~~~~ | | | char (*)[64] drivers/bluetooth/btusb.c:3333:48: note: expected 'char **' but argument is of type 'char (*)[64]' 3333 | static void btusb_generate_qca_nvm_name(char **fwname, | ~~~~~~~^~~~~~ drivers/bluetooth/btusb.c:3374:53: error: passing argument 1 of 'btusb_generate_qca_nvm_name' from incompatible pointer type [-Werror=incompatible-pointer-types] 3374 | btusb_generate_qca_nvm_name(&fwname, sizeof(fwname), ver, NULL, NULL); | ^~~~~~~ | | | char (*)[64] drivers/bluetooth/btusb.c:3333:48: note: expected 'char **' but argument is of type 'char (*)[64]' 3333 | static void btusb_generate_qca_nvm_name(char **fwname, | ~~~~~~~^~~~~~ cc1: some warnings being treated as errors vim +/snprintf +3342 drivers/bluetooth/btusb.c 3332 3333 static void btusb_generate_qca_nvm_name(char **fwname, 3334 int max_size, 3335 struct qca_version *ver, 3336 char *separator, 3337 char *vendor) 3338 { 3339 if (((ver->flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) { 3340 /* if boardid equal 0, use default nvm without surfix */ 3341 if (le16_to_cpu(ver->board_id) == 0x0) { 3343 le32_to_cpu(ver->rom_version), 3344 separator, 3345 vendor); 3346 } else { 3347 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x%s%s%04x.bin", 3348 le32_to_cpu(ver->rom_version), 3349 separator, 3350 vendor, 3351 le16_to_cpu(ver->board_id)); 3352 } 3353 } else { 3354 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin", 3355 le32_to_cpu(ver->rom_version)); 3356 } 3357 3358 } 3359 3360 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev, 3361 struct qca_version *ver, 3362 const struct qca_device_info *info) 3363 { 3364 const struct firmware *fw; 3365 char fwname[64]; 3366 int err; 3367 3368 switch (ver->ram_version) { 3369 case WCN6855_2_0_RAM_VERSION_GF: 3370 case WCN6855_2_1_RAM_VERSION_GF: 3372 break; 3373 default: 3374 btusb_generate_qca_nvm_name(&fwname, sizeof(fwname), ver, NULL, NULL); 3375 break; 3376 } 3377 3378 err = request_firmware(&fw, fwname, &hdev->dev); 3379 if (err) { 3380 bt_dev_err(hdev, "failed to request NVM file: %s (%d)", 3381 fwname, err); 3382 return err; 3383 } 3384 3385 bt_dev_info(hdev, "using NVM file: %s", fwname); 3386 3387 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr); 3388 3389 release_firmware(fw); 3390 3391 return err; 3392 } 3393 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org