asus-acpi: fingers off backlight if video.ko is serving this functionality
Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/misc/asus-laptop.c b/drivers/misc/asus-laptop.c
index a9d5228..8fb8b35 100644
--- a/drivers/misc/asus-laptop.c
+++ b/drivers/misc/asus-laptop.c
@@ -1208,9 +1208,13 @@
dev = acpi_get_physical_device(hotk->device->handle);
- result = asus_backlight_init(dev);
- if (result)
- goto fail_backlight;
+ if (!acpi_video_backlight_support()) {
+ result = asus_backlight_init(dev);
+ if (result)
+ goto fail_backlight;
+ } else
+ printk(ASUS_INFO "Brightness ignored, must be controlled by "
+ "ACPI video driver\n");
result = asus_led_init(dev);
if (result)