Re: [PATCH v3] Bluetooth: btrtl: HCI reset on close for Realtek BT chip

[Daniel Drake]

On Tue, Jun 25, 2019 at 4:32 PM Jian-Hong Pan <jian-hong@xxxxxxxxxxxx> wrote:
> 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. Scanning must be active while turning off for this
> bug to be hit.
>
> bluetoothd[1576]: Failed to set mode: Failed (0x03)
>
> If BT is turned 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.
>
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=203429
> Signed-off-by: Jian-Hong Pan <jian-hong@xxxxxxxxxxxx>

Reviewed-by: Daniel Drake <drake@xxxxxxxxxxxx>