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authorKai-Heng Feng <kai.heng.feng@canonical.com>2020-02-05 19:26:33 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-03-12 09:34:42 +0100
commitb63e48fb50e1ca71db301ca9082befa6f16c55c4 (patch)
treec3f1b4a14d955bfd701614a53428f811003c960b /drivers/usb/core
parent16263abc12d09871156a1c8650fb651f0e552f5e (diff)
downloadlinux-b63e48fb50e1ca71db301ca9082befa6f16c55c4.tar.bz2
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>
Diffstat (limited to 'drivers/usb/core')
-rw-r--r--drivers/usb/core/quirks.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 2dac3e7cdd97..df6e6156e1d4 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 },