ACPI: video: Use native backlight on Acer Aspire 5783z

The Acer Aspire 5783z shipped with Windows 7 and as such does not trigger
our "win8 ready" heuristic for prefering the native backlight interface.

Still ACPI backlight control doesn't work on this model, where as the
native (intel_video) backlight interface does work. Add a quirk to
force using native backlight control on this model.

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_detect.c b/drivers/acpi/video_detect.c
index 419f814..b4994e5 100644 (file)
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -352,6 +352,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
                DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"),
                },
        },
+       {
+        .callback = video_detect_force_native,
+        .ident = "Acer Aspire 5738z",
+        .matches = {
+               DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+               DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5738"),
+               DMI_MATCH(DMI_BOARD_NAME, "JV50"),
+               },
+       },
 
        /*
         * Desktops which falsely report a backlight and which our heuristics