[kernel PATCH v2] Bluetooth: btmtksdio: enable bluetooth wakeup in system suspend

[kernel test robot]

Hi Zhengping,

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 v6.6-rc5 next-20231012]
[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/Zhengping-Jiang/Bluetooth-btmtksdio-enable-bluetooth-wakeup-in-system-suspend/20231012-064116
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth.git master
patch link:    https://lore.kernel.org/r/20231011153928.kernel.v2.1.I6dbfc1fedddf0633b55ce7e7a10ef7f3929a9bdc%40changeid
patch subject: [kernel PATCH v2] Bluetooth: btmtksdio: enable bluetooth wakeup in system suspend
config: sh-allyesconfig (https://download.01.org/0day-ci/archive/20231013/202310131817.oEUPvya8-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231013/202310131817.oEUPvya8-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/202310131817.oEUPvya8-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/bluetooth/btmtksdio.c:1501:12: warning: 'btmtksdio_system_resume' defined but not used [-Wunused-function]
    1501 | static int btmtksdio_system_resume(struct device *dev)
         |            ^~~~~~~~~~~~~~~~~~~~~~~
>> drivers/bluetooth/btmtksdio.c:1464:12: warning: 'btmtksdio_system_suspend' defined but not used [-Wunused-function]
    1464 | static int btmtksdio_system_suspend(struct device *dev)
         |            ^~~~~~~~~~~~~~~~~~~~~~~~


vim +/btmtksdio_system_resume +1501 drivers/bluetooth/btmtksdio.c

  1463	
> 1464	static int btmtksdio_system_suspend(struct device *dev)
  1465	{
  1466		struct sdio_func *func = dev_to_sdio_func(dev);
  1467		struct btmtksdio_dev *bdev;
  1468	
  1469		bdev = sdio_get_drvdata(func);
  1470		if (!bdev)
  1471			return 0;
  1472	
  1473		if (!test_bit(BTMTKSDIO_FUNC_ENABLED, &bdev->tx_state))
  1474			return 0;
  1475	
  1476		set_bit(BTMTKSDIO_BT_WAKE_ENABLED, &bdev->tx_state);
  1477	
  1478		return btmtksdio_runtime_suspend(dev);
  1479	}
  1480	
  1481	static int btmtksdio_runtime_resume(struct device *dev)
  1482	{
  1483		struct sdio_func *func = dev_to_sdio_func(dev);
  1484		struct btmtksdio_dev *bdev;
  1485		int err;
  1486	
  1487		bdev = sdio_get_drvdata(func);
  1488		if (!bdev)
  1489			return 0;
  1490	
  1491		if (!test_bit(BTMTKSDIO_FUNC_ENABLED, &bdev->tx_state))
  1492			return 0;
  1493	
  1494		err = btmtksdio_drv_pmctrl(bdev);
  1495	
  1496		bt_dev_dbg(bdev->hdev, "status (%d) get ownership from device", err);
  1497	
  1498		return err;
  1499	}
  1500	
> 1501	static int btmtksdio_system_resume(struct device *dev)
  1502	{
  1503		return btmtksdio_runtime_resume(dev);
  1504	}
  1505	

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