[PATCH 1/2] Bluetooth: btmtksdio: fix the reset takes too long

[sean.wang at mediatek.com]

From: Sean Wang <sean.wang at mediatek.com>

Sending WMT command during the reset in progress is invalid and would get
no response from firmware until the reset is complete, so we ignore the WMT
command here to resolve the issue which causes the whole reset process
taking too long.

Fixes: 8fafe702253d ("Bluetooth: mt7921s: support bluetooth reset mechanism")
Co-developed-by: Yake Yang <yake.yang at mediatek.com>
Signed-off-by: Yake Yang <yake.yang at mediatek.com>
Signed-off-by: Sean Wang <sean.wang at mediatek.com>
---
 drivers/bluetooth/btmtksdio.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
index 4ae6631a7c29..26e27fd79a21 100644
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c
@@ -1189,6 +1189,10 @@ static int btmtksdio_shutdown(struct hci_dev *hdev)
 	 */
 	pm_runtime_get_sync(bdev->dev);
 
+	/* wmt command only works until the reset is complete */
+	if (test_bit(BTMTKSDIO_HW_RESET_ACTIVE, &bdev->tx_state))
+		goto ignore_wmt_cmd;
+
 	/* Disable the device */
 	wmt_params.op = BTMTK_WMT_FUNC_CTRL;
 	wmt_params.flag = 0;
@@ -1202,6 +1206,7 @@ static int btmtksdio_shutdown(struct hci_dev *hdev)
 		return err;
 	}
 
+ignore_wmt_cmd:
 	pm_runtime_put_noidle(bdev->dev);
 	pm_runtime_disable(bdev->dev);
 
-- 
2.25.1