From 540b8bb9c33935183ceb5bed466a42ad72b2af56 Mon Sep 17 00:00:00 2001 From: Thomas Renninger Date: Fri, 1 Aug 2008 17:38:02 +0200 Subject: [PATCH] sony-laptop: fingers off backlight if video.ko is serving this functionality Signed-off-by: Thomas Renninger Acked-by: Zhang Rui Signed-off-by: Andi Kleen Signed-off-by: Len Brown --- drivers/misc/sony-laptop.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c index 06f07e19dc7..7bcb81002dc 100644 --- a/drivers/misc/sony-laptop.c +++ b/drivers/misc/sony-laptop.c @@ -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); -- 2.41.1