USB: Disable LPM on WD19's Realtek Hub

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>

diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 2dac3e7cdd97205d47883606a35a74d57711e26a..df6e6156e1d4a6ac54d4560403051607b5c62680 100644 (file)
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -378,6 +378,9 @@ 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 },