linux-kernel - [PATCH 1/1] usb: quirks: Add no-lpm quirk for Elan Microelectronics Touchpad

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Message-Id: <a73c751a9299a263527b81eb2a6d6c7eb08e4e41.1467421035.git.joseph.salisbury@canonical.com>
Date:	Wed,  6 Jul 2016 17:53:47 -0400
From:	Joseph Salisbury <joseph.salisbury@...onical.com>
To:	gregkh@...uxfoundation.org, hdegoede@...hat.com,
	adrienverge@...il.com, yaowen@...gle.com, vpalatin@...omium.org,
	stern@...land.harvard.edu
Cc:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	stable@...r.kernel.org
Subject: [PATCH 1/1] usb: quirks: Add no-lpm quirk for Elan Microelectronics Touchpad

BugLink: http://bugs.launchpad.net/bugs/1498667

As reported in BugLink, this device has an issue with Linux Power Management so 
adding a quirk.  This quirk was reccomended by Alan Stern:

http://lkml.iu.edu/hypermail/linux/kernel/1606.2/05590.html

Signed-off-by: Joseph Salisbury <joseph.salisbury@...onical.com>
Cc: stable <stable@...r.kernel.org>

---
 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 944a6dc..a33d003 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -198,6 +198,9 @@ static const struct usb_device_id usb_quirk_list[] = {
 	/* Protocol and OTG Electrical Test Device */
 	{ USB_DEVICE(0x1a0a, 0x0200), .driver_info =
 			USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL },
+
+	/* ELAN Microelectronics Touchscreen */
+	{ USB_DEVICE(0x04f3, 0x0381), .driver_info = USB_QUIRK_NO_LPM },
 
 	/* Acer C120 LED Projector */
 	{ USB_DEVICE(0x1de1, 0xc102), .driver_info = USB_QUIRK_NO_LPM },
-- 
2.7.4