[3.16.y-ckt stable] Patch "ACPI / video: Add disable_native_backlight quirk for Samsung 730U3E/740U3E" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    ACPI / video: Add disable_native_backlight quirk for Samsung 730U3E/740U3E

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt8.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 53d8495e688243007284c00411535bd9325a0fee Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede at redhat.com>
Date: Fri, 9 Jan 2015 16:22:57 +0100
Subject: ACPI / video: Add disable_native_backlight quirk for Samsung
 730U3E/740U3E

commit 3295d73002f4be341069a000aec4b8d7e5ea8d2c upstream.

The Samsung 730U3E/740U3E has integrated ATI Radeon graphics, and backlight
control does not work properly when using the native interfaces.

Link: https://bugzilla.redhat.com/show_bug.cgi?id=1094948
Signed-off-by: Hans de Goede <hdegoede at redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki at intel.com>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/acpi/video.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index b7bed5fdc433..d4b6a214892b 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -711,6 +711,15 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "370R4E/370R4V/370R5E/3570RE/370R5V"),
 		},
 	},
+	{
+	 /* https://bugzilla.redhat.com/show_bug.cgi?id=1094948 */
+	 .callback = video_disable_native_backlight,
+	 .ident = "SAMSUNG 730U3E/740U3E",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"),
+		},
+	},

 	{
 	 /* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */