Realtek RTL8822BE BT chip on ASUS X420FA cannot be turned on correctly after on-off several times. Bluetooth daemon sets BT mode failed when this issue happens. bluetoothd[1576]: Failed to set mode: Failed (0x03) If BT is tunred off, then turned on again, it works correctly again. According to the vendor driver, the HCI_QUIRK_RESET_ON_CLOSE flag is set during probing. So, this patch makes Realtek's BT reset on close to fix this issue. Signed-off-by: Jian-Hong Pan <jian-hong@xxxxxxxxxxxx> --- v2: - According to the vendor driver, it makes "all" Realtek's BT reset on close. So, this version makes it the same. - Change to the new subject for all Realtek BT chips. drivers/bluetooth/btrtl.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c index 208feef63de4..be6d5f7e1e44 100644 --- a/drivers/bluetooth/btrtl.c +++ b/drivers/bluetooth/btrtl.c @@ -630,6 +630,10 @@ int btrtl_setup_realtek(struct hci_dev *hdev) return PTR_ERR(btrtl_dev); ret = btrtl_download_firmware(hdev, btrtl_dev); + /* According to the vendor driver, BT must be reset on close to avoid + * firmware crash since kernel v3.7.1. + */ + set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); btrtl_free(btrtl_dev); -- 2.22.0
