Hi Rocky, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on bluetooth-next/master] [also build test WARNING on linus/master v5.9-rc5 next-20200914] [cannot apply to linux/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/Rocky-Liao/Bluetooth-btusb-Add-Q... base: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master config: mips-randconfig-s031-20200913 (attached as .config) compiler: mips-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-191-g10164920-dirty # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/bluetooth/btusb.c:1798:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1798:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1798:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1798:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1802:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1802:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1802:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1802:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1806:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1806:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1806:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1806:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1810:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1810:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1810:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1810:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1814:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1814:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1814:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:1814:18: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2324:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2324:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2324:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2324:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2333:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2333:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2333:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2333:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2334:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2334:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2334:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2334:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2335:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2335:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2335:25: sparse: sparse: cast to restricted __le16 drivers/bluetooth/btusb.c:2335:25: sparse: sparse: cast to restricted __le16 # https://github.com/0day-ci/linux/commit/9efa46880370bdf87d87ebc14f562fc9d... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Rocky-Liao/Bluetooth-btusb-Add-Qualcomm-Bluetooth-SoC-WCN6855-support/20200914-172810 git checkout 9efa46880370bdf87d87ebc14f562fc9d3cbfa01 vim +3584 drivers/bluetooth/btusb.c 3552 3553 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev, 3554 struct qca_version *ver, 3555 const struct qca_device_info *info) 3556 { 3557 struct qca_rampatch_version *rver; 3558 const struct firmware *fw; 3559 u32 ver_rom, ver_patch, rver_rom; 3560 u16 rver_rom_low, rver_rom_high, rver_patch; 3561 char fwname[64]; 3562 int err; 3563 3564 ver_rom = le32_to_cpu(ver->rom_version); 3565 ver_patch = le32_to_cpu(ver->patch_version); 3566 3567 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom); 3568 3569 err = request_firmware(&fw, fwname, &hdev->dev); 3570 if (err) { 3571 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)", 3572 fwname, err); 3573 return err; 3574 } 3575 3576 bt_dev_info(hdev, "using rampatch file: %s", fwname); 3577 3578 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset); 3579 rver_rom_low = le16_to_cpu(rver->rom_version); 3580 rver_patch = le16_to_cpu(rver->patch_version); 3581 3582 if (ver_rom & ~0xffffU) { 3583 rver_rom_high = le16_to_cpu(*(__le16 *)(fw->data + 16)); 3585 } else { 3586 rver_rom = (__force u32)rver_rom_low; 3587 } 3588 3589 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, " 3590 "firmware rome 0x%x build 0x%x", 3591 rver_rom, rver_patch, ver_rom, ver_patch); 3592 3593 if (rver_rom != ver_rom || rver_patch <= ver_patch) { 3594 bt_dev_err(hdev, "rampatch file version did not match with firmware"); 3595 err = -EINVAL; 3596 goto done; 3597 } 3598 3599 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr); 3600 3601 done: 3602 release_firmware(fw); 3603 3604 return err; 3605 } 3606 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org