[PATCH 2/2] Bluetooth: btmtksdio: fix possible FW initialization failure

[sean.wang at mediatek.com]

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

According to FW advised sequence, mt7921s need to re-acquire privilege
immediately after the firmware download is complete before normal running.
Otherwise, it is still possible the bus may be stuck in an abnormal status
that causes FW initialization failure in the current driver.

Fixes: 752aea58489f ("Bluetooth: mt7921s: fix bus hang with wrong privilege")
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 | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
index 26e27fd79a21..d6700efcfe8c 100644
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c
@@ -864,6 +864,14 @@ static int mt79xx_setup(struct hci_dev *hdev, const char *fwname)
 		return err;
 	}
 
+	err = btmtksdio_fw_pmctrl(bdev);
+	if (err < 0)
+		return err;
+
+	err = btmtksdio_drv_pmctrl(bdev);
+	if (err < 0)
+		return err;
+
 	/* Enable Bluetooth protocol */
 	wmt_params.op = BTMTK_WMT_FUNC_CTRL;
 	wmt_params.flag = 0;
@@ -1109,14 +1117,6 @@ static int btmtksdio_setup(struct hci_dev *hdev)
 		if (err < 0)
 			return err;
 
-		err = btmtksdio_fw_pmctrl(bdev);
-		if (err < 0)
-			return err;
-
-		err = btmtksdio_drv_pmctrl(bdev);
-		if (err < 0)
-			return err;
-
 		/* Enable SCO over I2S/PCM */
 		err = btmtksdio_sco_setting(hdev);
 		if (err < 0) {
-- 
2.25.1