Hi Greg,
> On Feb 5, 2020, at 19:26, Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> wrote:
>
> Realtek Hub (0bda:0x0487) used in Dell Dock WD19 sometimes drops off the
> bus when bringing underlying ports from U3 to U0.
>
> Disabling LPM on the hub during setting link state is not enough, so
> let's disable LPM completely for this hub.
>
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>
As Mathias stated, this patch can be considered as a separate one.
Can you please review and merge this patch?
Kai-Heng
> ---
> v2:
> - Use quirk instead of the original approach.
>
> drivers/usb/core/quirks.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
> index 6b6413073584..2fb7c1602280 100644
> --- a/drivers/usb/core/quirks.c
> +++ b/drivers/usb/core/quirks.c
> @@ -371,6 +371,9 @@ static const struct usb_device_id usb_quirk_list[] = {
> { USB_DEVICE(0x0b05, 0x17e0), .driver_info =
> USB_QUIRK_IGNORE_REMOTE_WAKEUP },
>
> + /* Realtek hub in Dell WD19 (Type-C) */
> + { USB_DEVICE(0x0bda, 0x0487), .driver_info = USB_QUIRK_NO_LPM },
> +
> /* Action Semiconductor flash disk */
> { USB_DEVICE(0x10d6, 0x2200), .driver_info =
> USB_QUIRK_STRING_FETCH_255 },
> --
> 2.17.1
>
