[PATCH] Bluetooth: btusb: mediatek: Add usb reset for firmware setup failure

[Hao Qin]

Add usb reset to recover BT device from a firmware setup failure,
it will restore the device to its original state and attempt setup
firmware again.

Signed-off-by: Hao Qin <hao.qin at mediatek.com>
---
 drivers/bluetooth/btusb.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 4c0cc13adb47..c5aab361795e 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -3160,6 +3160,9 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
 						btusb_mtk_hci_wmt_sync);
 		if (err < 0) {
 			bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
+			btusb_stop_traffic(data);
+			usb_kill_anchored_urbs(&data->tx_anchor);
+			usb_queue_reset_device(data->intf);
 			return err;
 		}
 
-- 
2.18.0