From: Kai-Heng Feng Date: Wed, 5 Feb 2020 11:26:33 +0000 (+0800) Subject: USB: Disable LPM on WD19's Realtek Hub X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b63e48fb50e1ca71db301ca9082befa6f16c55c4;p=linux.git 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 Signed-off-by: Kai-Heng Feng Cc: stable Link: https://lore.kernel.org/r/20200205112633.25995-3-kai.heng.feng@canonical.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c index 2dac3e7cdd972..df6e6156e1d4a 100644 --- 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 },