[PATCH 3/6] Bluetooth: mediatek: fix up an error path to restore bdev->tx_state

[sean.wang]

From: Sean Wang <sean.w...@mediatek.com>

Restore bdev->tx_state with clearing bit BTMTKUART_TX_WAIT_VND_EVT
when there is an error on waiting for the corresponding event.

Fixes: 7237c4c9ec92 ("Bluetooth: mediatek: Add protocol support for MediaTek 
serial devices")
Signed-off-by: Sean Wang <sean.w...@mediatek.com>
---
 drivers/bluetooth/btmtkuart.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/bluetooth/btmtkuart.c b/drivers/bluetooth/btmtkuart.c
index b8ea011b82d8..9f8177b216b6 100644
--- a/drivers/bluetooth/btmtkuart.c
+++ b/drivers/bluetooth/btmtkuart.c
@@ -115,11 +115,13 @@ static int mtk_hci_wmt_sync(struct hci_dev *hdev, u8 op, 
u8 flag, u16 plen,
                                  TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
        if (err == -EINTR) {
                bt_dev_err(hdev, "Execution of wmt command interrupted");
+               clear_bit(BTMTKUART_TX_WAIT_VND_EVT, &bdev->tx_state);
                return err;
        }
 
        if (err) {
                bt_dev_err(hdev, "Execution of wmt command timed out");
+               clear_bit(BTMTKUART_TX_WAIT_VND_EVT, &bdev->tx_state);
                return -ETIMEDOUT;
        }
 
-- 
2.18.0