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From: Hans de Goede <hdegoede@redhat.com>
Date: Fri, 9 Jan 2015 15:28:29 +0100
Subject: [PATCH] acpi-video: Add disable_native_backlight quirk for Samsung
 730U3E/740U3E

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

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1094948
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/acpi/video.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 25863442b6ae..5c4e35bebd3b 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -505,7 +505,15 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "HP ENVY 15 Notebook PC"),
 		},
 	},
-
+	{
+	 /* 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"),
+		},
+	},
 	{
 	 .callback = video_disable_native_backlight,
 	 .ident = "SAMSUNG 870Z5E/880Z5E/680Z5E",
-- 
2.1.0