From: Sean Wang sean.wang@mediatek.com
[ Upstream commit 7469720563e01f479ec5afe06bd6f440f965d523 ]
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@mediatek.com Signed-off-by: Yake Yang yake.yang@mediatek.com Signed-off-by: Sean Wang sean.wang@mediatek.com Signed-off-by: Marcel Holtmann marcel@holtmann.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 4ae6631a7c29..5d13c1f61bd3 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) {