Re: [PATCH v1] Bluetooth: btusb: support download nvm with different board id for wcn6855

[kernel test robot]

Hi Zijun,

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 v5.10-rc6 next-20201201]
[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-support-download-nvm-with-different-board-id-for-wcn6855/20201203-130200
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master
config: arm-randconfig-s031-20201203 (attached as .config)
compiler: arm-linux-gnueabi-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: v0.6.3-179-ga00755aa-dirty
        # https://github.com/0day-ci/linux/commit/623a173767a07fecb449a96f4f897379a4dcd9ba
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Zijun-Hu/Bluetooth-btusb-support-download-nvm-with-different-board-id-for-wcn6855/20201203-130200
        git checkout 623a173767a07fecb449a96f4f897379a4dcd9ba
        # 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=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>


"sparse warnings: (new ones prefixed by >>)"
   drivers/bluetooth/btusb.c:1841:18: sparse: sparse: cast to restricted __le16
   drivers/bluetooth/btusb.c:1845:18: sparse: sparse: cast to restricted __le16
   drivers/bluetooth/btusb.c:1849:18: sparse: sparse: cast to restricted __le16
   drivers/bluetooth/btusb.c:1853:18: sparse: sparse: cast to restricted __le16
   drivers/bluetooth/btusb.c:1857:18: sparse: sparse: cast to restricted __le16
   drivers/bluetooth/btusb.c:2367:25: sparse: sparse: cast to restricted __le16
   drivers/bluetooth/btusb.c:2376:25: sparse: sparse: cast to restricted __le16
   drivers/bluetooth/btusb.c:2377:25: sparse: sparse: cast to restricted __le16
   drivers/bluetooth/btusb.c:2378:25: sparse: sparse: cast to restricted __le16
   drivers/bluetooth/btusb.c:3631:28: sparse: sparse: cast to restricted __le32
>> drivers/bluetooth/btusb.c:3662:18: sparse: sparse: restricted __le16 degrades to integer

vim +3662 drivers/bluetooth/btusb.c

  3653	
  3654	static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
  3655					    struct qca_version *ver,
  3656					    const struct qca_device_info *info)
  3657	{
  3658		const struct firmware *fw;
  3659		char fwname[64];
  3660		int err;
  3661	
> 3662		if (((ver->flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
  3663			snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x_%04x.bin",
  3664				 le32_to_cpu(ver->rom_version),
  3665				 le16_to_cpu(ver->board_id));
  3666		} else {
  3667			snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
  3668				 le32_to_cpu(ver->rom_version));
  3669		}
  3670	
  3671		err = request_firmware(&fw, fwname, &hdev->dev);
  3672		if (err) {
  3673			bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
  3674				   fwname, err);
  3675			return err;
  3676		}
  3677	
  3678		bt_dev_info(hdev, "using NVM file: %s", fwname);
  3679	
  3680		err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
  3681	
  3682		release_firmware(fw);
  3683	
  3684		return err;
  3685	}
  3686	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

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