From: Thomas Renninger <trenn@xxxxxxx>
Signed-off-by: Thomas Renninger <trenn@xxxxxxx>
Acked-by: Zhang Rui <rui.zhang@xxxxxxxxx>
Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Acked-by: Carlos Corbacho <carlos@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
---
drivers/misc/acer-wmi.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/drivers/misc/acer-wmi.c b/drivers/misc/acer-wmi.c
index 0532a2d..94c9f91 100644
--- a/drivers/misc/acer-wmi.c
+++ b/drivers/misc/acer-wmi.c
@@ -1297,6 +1297,12 @@ static int __init acer_wmi_init(void)
set_quirks();
+ if (!acpi_video_backlight_support() && has_cap(ACER_CAP_BRIGHTNESS)) {
+ interface->capability &= ~ACER_CAP_BRIGHTNESS;
+ printk(ACER_INFO "Brightness must be controlled by "
+ "generic video driver\n");
+ }
+
if (platform_driver_register(&acer_platform_driver)) {
printk(ACER_ERR "Unable to register platform driver.\n");
goto error_platform_register;
--
1.6.0.3.640.g6331a
--
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