summaryrefslogtreecommitdiff
path: root/drivers/usb/core
diff options
context:
space:
mode:
authorKai-Heng Feng <kai.heng.feng@canonical.com>2020-02-05 14:26:33 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-03-25 10:25:50 +0300
commitd742e987404893180360514a164563a3eb6e54ed (patch)
tree6943a8339e44cd45985a82623f86f8665f821218 /drivers/usb/core
parent712d9c2e92ea37e687086ac5fcbe48ea8dc7dedf (diff)
downloadlinux-d742e987404893180360514a164563a3eb6e54ed.tar.xz
USB: Disable LPM on WD19's Realtek Hub
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>
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 },