[PATCH 3/4] Bluetooth: btusb: mediatek: reset the device as WMT failed

[AngeloGioacchino Del Regno]

Il 13/09/22 00:18, sean.wang at mediatek.com ha scritto:
> From: Sean Wang <sean.wang at mediatek.com>
> 
> Reset the BT device whenever the driver detected any WMT failure happened
> to recover such kind of system-level error as soon as possible.
> 
> Signed-off-by: Sean Wang <sean.wang at mediatek.com>

This looks like a fix, so you probably want a Fixes tag for backport.

Regards,
Angelo

> ---
>   drivers/bluetooth/btusb.c | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
> index 653f57a98233..dc86726c8271 100644
> --- a/drivers/bluetooth/btusb.c
> +++ b/drivers/bluetooth/btusb.c
> @@ -2576,6 +2576,10 @@ static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
>   	data->evt_skb = NULL;
>   err_free_wc:
>   	kfree(wc);
> +
> +	if (err < 0)
> +		btmtk_reset_sync(hdev);
> +
>   	return err;
>   }
>