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authorThomas Renninger <trenn@suse.de>2008-08-01 17:38:01 +0200
committerLen Brown <len.brown@intel.com>2008-11-08 00:27:28 -0500
commita598c82f39892069a8f6693459b1179fd9ef30e1 (patch)
tree6a2b500c204893ff7fff6618febf3b871aac5cc9 /drivers
parent7d5c89a615c5dae039094a3cf4a56fe6aab81765 (diff)
msi-laptop: 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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/misc/msi-laptop.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/misc/msi-laptop.c b/drivers/misc/msi-laptop.c
index de898c6938f..759763d18e4 100644
--- a/drivers/misc/msi-laptop.c
+++ b/drivers/misc/msi-laptop.c
@@ -347,12 +347,16 @@ static int __init msi_init(void)
/* Register backlight stuff */
- msibl_device = backlight_device_register("msi-laptop-bl", NULL, NULL,
- &msibl_ops);
- if (IS_ERR(msibl_device))
- return PTR_ERR(msibl_device);
-
- msibl_device->props.max_brightness = MSI_LCD_LEVEL_MAX-1;
+ if (acpi_video_backlight_support()) {
+ printk(KERN_INFO "MSI: Brightness ignored, must be controlled "
+ "by ACPI video driver\n");
+ } else {
+ msibl_device = backlight_device_register("msi-laptop-bl", NULL,
+ NULL, &msibl_ops);
+ if (IS_ERR(msibl_device))
+ return PTR_ERR(msibl_device);
+ msibl_device->props.max_brightness = MSI_LCD_LEVEL_MAX-1;
+ }
ret = platform_driver_register(&msipf_driver);
if (ret)