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Old 11-20-2008, 03:33 PM
Andy Whitcroft
 
Default compal: fingers off backlight if video.ko is serving this functionality

From: Thomas Renninger <trenn@suse.de>

Bug: #257827
commit 29454f17124c655236d2972dad21907e15ca294b upstream

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>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
---
drivers/misc/compal-laptop.c | 12 +++++++-----
1 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/misc/compal-laptop.c b/drivers/misc/compal-laptop.c
index 344b790..11003bb 100644
--- a/drivers/misc/compal-laptop.c
+++ b/drivers/misc/compal-laptop.c
@@ -326,12 +326,14 @@ static int __init compal_init(void)

/* Register backlight stuff */

- compalbl_device = backlight_device_register("compal-laptop", NULL, NULL,
- &compalbl_ops);
- if (IS_ERR(compalbl_device))
- return PTR_ERR(compalbl_device);
+ if (!acpi_video_backlight_support()) {
+ compalbl_device = backlight_device_register("compal-laptop", NULL, NULL,
+ &compalbl_ops);
+ if (IS_ERR(compalbl_device))
+ return PTR_ERR(compalbl_device);

- compalbl_device->props.max_brightness = COMPAL_LCD_LEVEL_MAX-1;
+ compalbl_device->props.max_brightness = COMPAL_LCD_LEVEL_MAX-1;
+ }

ret = platform_driver_register(&compal_driver);
if (ret)
--
1.6.0.4.911.gc990


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