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sony-laptop: fingers off backlight if video.ko is serving this functionality

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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>
This commit is contained in:
Thomas Renninger 2008-08-01 17:38:02 +02:00 committed by Len Brown
parent a598c82f39
commit 540b8bb9c3
1 changed files with 5 additions and 1 deletions
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6
drivers/misc/sony-laptop.c
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@ -1038,7 +1038,11 @@ static int sony_nc_add(struct acpi_device *device)
goto outinput;
}
if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT", &handle))) {
if (!acpi_video_backlight_support()) {
printk(KERN_INFO DRV_PFX "Sony: Brightness ignored, must be "
"controlled by ACPI video driver\n");
} else if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT",
&handle))) {
sony_backlight_device = backlight_device_register("sony", NULL,
NULL,
&sony_backlight_ops);