linux-kernel - [PATCH 3.2 50/92] HID: usbhid: quirk for Synaptics Large Touchccreen

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Date:	Sat, 07 Jun 2014 02:26:29 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Jiri Kosina" <jkosina@...e.cz>,
	"AceLan Kao" <acelan.kao@...onical.com>
Subject: [PATCH 3.2 50/92] HID: usbhid: quirk for Synaptics Large Touchccreen

3.2.60-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: AceLan Kao <acelan.kao@...onical.com>

commit 8171a67d587a09e14a4949a81e070345fedcf410 upstream.

BugLink: http://bugs.launchpad.net/bugs/1180881

Synaptics large touchscreen doesn't support some of the report request
while initializing. The unspoorted request will make the device unreachable,
and will lead to the following usb_submit_urb() function call timeout.
So, add the IDs into HID_QUIRK_NO_INIT_REPORTS quirk.

Signed-off-by: AceLan Kao <acelan.kao@...onical.com>
Signed-off-by: Jiri Kosina <jkosina@...e.cz>
[bwh: Backported to 3.2:
 - Adjust context
 - Add definition of USB_VENDOR_ID_SYNAPTICS]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -678,6 +678,10 @@
 #define USB_DEVICE_ID_SYMBOL_SCANNER_1	0x0800
 #define USB_DEVICE_ID_SYMBOL_SCANNER_2	0x1300
 
+#define USB_VENDOR_ID_SYNAPTICS		0x06cb
+#define USB_DEVICE_ID_SYNAPTICS_LTS1	0x0af8
+#define USB_DEVICE_ID_SYNAPTICS_LTS2	0x1d10
+
 #define USB_VENDOR_ID_THRUSTMASTER	0x044f
 
 #define USB_VENDOR_ID_TOPSEED		0x0766
--- a/drivers/hid/usbhid/hid-quirks.c
+++ b/drivers/hid/usbhid/hid-quirks.c
@@ -100,6 +100,8 @@ static const struct hid_blacklist {
 	{ USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS, HID_QUIRK_MULTI_INPUT },
 	{ USB_VENDOR_ID_SIGMA_MICRO, USB_DEVICE_ID_SIGMA_MICRO_KEYBOARD, HID_QUIRK_NO_INIT_REPORTS },
 	{ USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_DUOSENSE, HID_QUIRK_NO_INIT_REPORTS },
+	{ USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS1, HID_QUIRK_NO_INIT_REPORTS },
+	{ USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS2, HID_QUIRK_NO_INIT_REPORTS },
 
 	{ 0, 0 }
 };

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