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authorThomas Renninger <trenn@suse.de>2008-08-01 17:37:56 +0200
committerLen Brown <len.brown@intel.com>2008-11-08 00:27:10 -0500
commitfebf2d95a71cd594182e4b3defb0e0ffdfe61482 (patch)
treef9b0dcd4465529f05aecb30b7d29347031a04283 /drivers/misc
parentc3d6de698c84efdbdd3781b7058bcc339ab43da8 (diff)
downloadlinux-febf2d95a71cd594182e4b3defb0e0ffdfe61482.tar.bz2
Acer-WMI: 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> Acked-by: Carlos Corbacho <carlos@strangeworlds.co.uk> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/acer-wmi.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/misc/acer-wmi.c b/drivers/misc/acer-wmi.c
index 0532a2de2ce4..94c9f911824e 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;