USB: quirks: add NO_LPM for Lenovo ThinkPad USB-C Dock Gen2 hub controllers

The Lenovo ThinkPad USB-C Dock Gen2 (17ef:a391, 17ef:a392) hub
controllers exhibit link instability when USB Link Power Management
is enabled, similar to the dock's Ethernet adapter (17ef:a387) which
already carries USB_QUIRK_NO_LPM.

When the dock reconnects after a transient disconnect, the hub
controllers enter LPM states between re-enumeration retries, causing
repeated disconnect/reconnect cycles lasting up to two minutes.
Disabling LPM for these devices restores stable enumeration.

Signed-off-by: Stephen J. Fuhry <fuhrysteve@gmail.com>
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/20260513171419.44849-1-fuhrysteve@gmail.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 0ffdaefba508870c811cd4e6eb3ae65570c1ed88..87810eff974ef876b55df274126aa10f33b0c554 100644 (file)
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -513,6 +513,10 @@ static const struct usb_device_id usb_quirk_list[] = {
        /* Lenovo ThinkPad USB-C Dock Gen2 Ethernet (RTL8153 GigE) */
        { USB_DEVICE(0x17ef, 0xa387), .driver_info = USB_QUIRK_NO_LPM },
 
+       /* Lenovo ThinkPad USB-C Dock Gen2 USB 3.1 and USB 2.0 hub controllers */
+       { USB_DEVICE(0x17ef, 0xa391), .driver_info = USB_QUIRK_NO_LPM },
+       { USB_DEVICE(0x17ef, 0xa392), .driver_info = USB_QUIRK_NO_LPM },
+
        /* BUILDWIN Photo Frame */
        { USB_DEVICE(0x1908, 0x1315), .driver_info =
                        USB_QUIRK_HONOR_BNUMINTERFACES },