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.

Link: https://bugzilla.redhat.com/show_bug.cgi?id=1094948
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 032db45..497d986 100644 (file)
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -522,6 +522,15 @@ 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 */