| From b63e48fb50e1ca71db301ca9082befa6f16c55c4 Mon Sep 17 00:00:00 2001 |
| From: Kai-Heng Feng <kai.heng.feng@canonical.com> |
| Date: Wed, 5 Feb 2020 19:26:33 +0800 |
| Subject: USB: Disable LPM on WD19's Realtek Hub |
| |
| From: Kai-Heng Feng <kai.heng.feng@canonical.com> |
| |
| commit b63e48fb50e1ca71db301ca9082befa6f16c55c4 upstream. |
| |
| 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. |
| |
| Acked-by: Alan Stern <stern@rowland.harvard.edu> |
| Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> |
| Cc: stable <stable@vger.kernel.org> |
| Link: https://lore.kernel.org/r/20200205112633.25995-3-kai.heng.feng@canonical.com |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| drivers/usb/core/quirks.c | 3 +++ |
| 1 file changed, 3 insertions(+) |
| |
| --- a/drivers/usb/core/quirks.c |
| +++ b/drivers/usb/core/quirks.c |
| @@ -229,6 +229,9 @@ static const struct usb_device_id usb_qu |
| { 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 }, |
