linux-kernel - [PATCH v3] USB: Add LPM quirk for Lenovo ThinkPad USB-C Dock Gen2 Ethernet

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Date:   Mon, 12 Apr 2021 21:54:53 +0800
From:   Kai-Heng Feng <kai.heng.feng@...onical.com>
To:     gregkh@...uxfoundation.org
Cc:     Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Alan Stern <stern@...land.harvard.edu>,
        penghao <penghao@...ontech.com>,
        Oliver Neukum <oneukum@...e.com>,
        Johan Hovold <johan@...nel.org>,
        Kars Mulder <kerneldev@...smulder.nl>,
        Tomasz Meresiński <tomasz@...esinski.eu>,
        linux-usb@...r.kernel.org (open list:USB SUBSYSTEM),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3] USB: Add LPM quirk for Lenovo ThinkPad USB-C Dock Gen2 Ethernet

This is another branded 8153 device that doesn't work well with LPM
enabled:
[ 400.597506] r8152 5-1.1:1.0 enx482ae3a2a6f0: Tx status -71

So disable LPM to resolve the issue.

BugLink: https://bugs.launchpad.net/bugs/1922651
Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
---
v3:
 - _Really_ put the quirk in the right order.

v2:
 - Put the quirk in the right order.

 drivers/usb/core/quirks.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 76ac5d6555ae..6114cf83bb44 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -438,6 +438,9 @@ static const struct usb_device_id usb_quirk_list[] = {
 	{ USB_DEVICE(0x17ef, 0xa012), .driver_info =
 			USB_QUIRK_DISCONNECT_SUSPEND },
 
+	/* Lenovo ThinkPad USB-C Dock Gen2 Ethernet (RTL8153 GigE) */
+	{ USB_DEVICE(0x17ef, 0xa387), .driver_info = USB_QUIRK_NO_LPM },
+
 	/* BUILDWIN Photo Frame */
 	{ USB_DEVICE(0x1908, 0x1315), .driver_info =
 			USB_QUIRK_HONOR_BNUMINTERFACES },
-- 
2.30.2