Messages in this thread |  | | Date | Fri, 10 Jan 2020 10:40:29 -0500 (EST) | From | Alan Stern <> | Subject | Re: [PATCH v2 3/3] USB: Disable LPM on WD19's Realtek Hub |
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On Fri, 10 Jan 2020, Kai-Heng Feng 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@canonical.com> > --- > 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 }, >
This is a very partial patch. There were four hunks in the original version but there's only one hunk in V2.
Alan Stern
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