[3.16.y-ckt stable] Patch "ACPI / video: Add some Samsung models to disable_native_backlight list" 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 some Samsung models to disable_native_backlight list

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 134dcb36a7c8f4f3fbd0acae77d5a84381be7d1d Mon Sep 17 00:00:00 2001
From: Aaron Lu <aaron.lu at intel.com>
Date: Mon, 22 Dec 2014 15:18:05 +0800
Subject: ACPI / video: Add some Samsung models to disable_native_backlight
 list

commit 7d0b93499f4879ddbc75d594f4ea216ba964f78e upstream.

Several Samsung laptop models (SAMSUNG 870Z5E/880Z5E/680Z5E and
SAMSUNG 370R4E/370R4V/370R5E/3570RE/370R5V) do not have a working
native backlight control interface so restore their acpi_videoX
interface.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=84221
Link: https://bugzilla.kernel.org/show_bug.cgi?id=84651
For SAMSUNG 870Z5E/880Z5E/680Z5E:
Reported-and-tested-by: Brent Saner <brent.saner at gmail.com>
Reported-by: Vitaliy Filippov <vitalif at yourcmc.ru>
Reported-by: Laszlo KREKACS <laszlo.krekacs.list at gmail.com>
For SAMSUNG 370R4E/370R4V/370R5E/3570RE/370R5V:
Reported-by: Vladimir Perepechin <vovochka13 at gmail.com>
Signed-off-by: Aaron Lu <aaron.lu at intel.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 | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index f1e3496c00c7..28fa58c11e56 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -694,6 +694,23 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "HP ENVY 15 Notebook PC"),
 		},
 	},
+
+	{
+	 .callback = video_disable_native_backlight,
+	 .ident = "SAMSUNG 870Z5E/880Z5E/680Z5E",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "870Z5E/880Z5E/680Z5E"),
+		},
+	},
+	{
+	 .callback = video_disable_native_backlight,
+	 .ident = "SAMSUNG 370R4E/370R4V/370R5E/3570RE/370R5V",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "370R4E/370R4V/370R5E/3570RE/370R5V"),
+		},
+	},
 	{}
 };