[PATCH v5 8/8] Bluetooth: btusb: mediatek: add ISO data transmission functions

[kernel test robot]

Hi Chris,

kernel test robot noticed the following build errors:

[auto build test ERROR on bluetooth-next/master]
[also build test ERROR on next-20240626]
[cannot apply to bluetooth/master linus/master v6.10-rc5]
[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/Chris-Lu/Bluetooth-btusb-mediatek-remove-the-unnecessary-goto-tag/20240626-114003
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master
patch link:    https://lore.kernel.org/r/20240626025329.26424-9-chris.lu%40mediatek.com
patch subject: [PATCH v5 8/8] Bluetooth: btusb: mediatek: add ISO data transmission functions
config: i386-buildonly-randconfig-003-20240627 (https://download.01.org/0day-ci/archive/20240628/202406280003.brf5D1qt-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240628/202406280003.brf5D1qt-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202406280003.brf5D1qt-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/bluetooth/btusb.c:28:
>> drivers/bluetooth/btmtk.h:274:17: error: incompatible integer to pointer conversion passing 'int' to parameter of type 'const void *' [-Wint-conversion]
     274 |         return PTR_ERR(-EOPNOTSUPP);
         |                        ^~~~~~~~~~~
   include/linux/err.h:49:61: note: passing argument to parameter 'ptr' here
      49 | static inline long __must_check PTR_ERR(__force const void *ptr)
         |                                                             ^
   In file included from drivers/bluetooth/btusb.c:28:
>> drivers/bluetooth/btmtk.h:274:9: error: incompatible integer to pointer conversion returning 'long' from a function with result type 'struct urb *' [-Wint-conversion]
     274 |         return PTR_ERR(-EOPNOTSUPP);
         |                ^~~~~~~~~~~~~~~~~~~~
   2 errors generated.


vim +274 drivers/bluetooth/btmtk.h

   270	
   271	static struct urb *alloc_mtk_intr_urb(struct hci_dev *hdev, struct sk_buff *skb,
   272					      usb_complete_t tx_complete)
   273	{
 > 274		return PTR_ERR(-EOPNOTSUPP);
   275	}
   276	

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