linux-kernel - [PATCH v3] usb: quirks: Add no-lpm quirk for Moshi USB to Ethernet Adapter

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Date:   Tue,  8 Aug 2017 17:51:27 +0800
From:   Kai-Heng Feng <kai.heng.feng@...onical.com>
To:     gregkh@...uxfoundation.org
Cc:     stern@...land.harvard.edu, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Kai-Heng Feng <kai.heng.feng@...onical.com>
Subject: [PATCH v3] usb: quirks: Add no-lpm quirk for Moshi USB to Ethernet Adapter

Moshi USB to Ethernet Adapter internally uses a Genesys Logic hub to
connect to Realtek r8153.

The Realtek r8153 ethernet does not work on the internal hub, no-lpm quirk
can make it work.

Since another r8153 dongle at my hand does not have the issue, so add
the quirk to the Genesys Logic hub instead.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
---
v3: Update comment to reflect the quirk is for the hub.

v2: Clarify that the adapter uses a hub internally.

 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 3116edfcdc18..65a87efc100e 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -150,6 +150,9 @@ static const struct usb_device_id usb_quirk_list[] = {
 	/* appletouch */
 	{ USB_DEVICE(0x05ac, 0x021a), .driver_info = USB_QUIRK_RESET_RESUME },
 
+	/* Genesys Logic hub, internally used by Moshi USB to Ethernet Adapter */
+	{ USB_DEVICE(0x05e3, 0x0616), .driver_info = USB_QUIRK_NO_LPM },
+
 	/* Avision AV600U */
 	{ USB_DEVICE(0x0638, 0x0a13), .driver_info =
 	  USB_QUIRK_STRING_FETCH_255 },
-- 
2.14.0