Hi,
On Fri, Apr 12, 2024 at 4:43 AM Hao Qin <hao.qin@xxxxxxxxxxxx> wrote:
>
> Add usb reset to recover BT device from a firmware setup failure,
> it will restore the device to its original state and attempt setup
> firmware again.
>
> Signed-off-by: Hao Qin <hao.qin@xxxxxxxxxxxx>
> ---
> drivers/bluetooth/btusb.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
> index 4c0cc13adb47..c5aab361795e 100644
> --- a/drivers/bluetooth/btusb.c
> +++ b/drivers/bluetooth/btusb.c
> @@ -3160,6 +3160,9 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
> btusb_mtk_hci_wmt_sync);
> if (err < 0) {
> bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
> + btusb_stop_traffic(data);
> + usb_kill_anchored_urbs(&data->tx_anchor);
> + usb_queue_reset_device(data->intf);
What if this was already caused by a reset? Wouldn't that create a
loop resetting the device over and over again?
> return err;
> }
>
> --
> 2.18.0
>
--
Luiz Augusto von Dentz
