[PATCH v4 3/3] Bluetooth: btusb: mediatek: add MediaTek devcoredump support

[kernel test robot]

Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on bluetooth/master]
[also build test WARNING on bluetooth-next/master linus/master v6.3 next-20230426]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/sean-wang-mediatek-com/Bluetooth-btmtk-introduce-btmtk-reset-work/20230427-071054
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth.git master
patch link:    https://lore.kernel.org/r/01d3fe06d3a1e333b193e7d9fbc9cbfb4ee5d02b.1682549719.git.objelf%40gmail.com
patch subject: [PATCH v4 3/3] Bluetooth: btusb: mediatek: add MediaTek devcoredump support
config: x86_64-randconfig-r035-20211003 (https://download.01.org/0day-ci/archive/20230428/202304280130.Aoglg07c-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/d253c927e94cb7e88bfcd0182449d29e477ca011
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review sean-wang-mediatek-com/Bluetooth-btmtk-introduce-btmtk-reset-work/20230427-071054
        git checkout d253c927e94cb7e88bfcd0182449d29e477ca011
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp at intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304280130.Aoglg07c-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/bluetooth/btusb.c:28:
>> drivers/bluetooth/btmtk.h:172:6: warning: no previous prototype for 'btmtk_register_coredump' [-Wmissing-prototypes]
     172 | void btmtk_register_coredump(struct hci_dev *hdev, u32 dev_id, const char *name,
         |      ^~~~~~~~~~~~~~~~~~~~~~~


vim +/btmtk_register_coredump +172 drivers/bluetooth/btmtk.h

   171	
 > 172	void btmtk_register_coredump(struct hci_dev *hdev, u32 dev_id, const char *name,
   173				     u32 fw_version)
   174	{
   175	}
   176	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests