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@xxxxxxxxx/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@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202310131817.oEUPvya8-lkp@xxxxxxxxx/ 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 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki