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authorThomas Renninger <trenn@suse.de>2008-08-01 17:38:00 +0200
committerLen Brown <len.brown@intel.com>2008-11-08 00:27:27 -0500
commit7d5c89a615c5dae039094a3cf4a56fe6aab81765 (patch)
tree75b1a919b9d579f1f0ca71bd71139735e115b457 /drivers/misc
parenta2bf8c01048f855fbf65a8fc41460aef71ca39dc (diff)
fujitsu-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/misc')
-rw-r--r--drivers/misc/fujitsu-laptop.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/misc/fujitsu-laptop.c b/drivers/misc/fujitsu-laptop.c
index d2cf0bfe316..1070dc1bc18 100644
--- a/drivers/misc/fujitsu-laptop.c
+++ b/drivers/misc/fujitsu-laptop.c
@@ -990,16 +990,16 @@ static int __init fujitsu_init(void)
/* Register backlight stuff */
- fujitsu->bl_device =
- backlight_device_register("fujitsu-laptop", NULL, NULL,
- &fujitsubl_ops);
- if (IS_ERR(fujitsu->bl_device))
- return PTR_ERR(fujitsu->bl_device);
-
- max_brightness = fujitsu->max_brightness;
-
- fujitsu->bl_device->props.max_brightness = max_brightness - 1;
- fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
+ if (!acpi_video_backlight_support()) {
+ fujitsu->bl_device =
+ backlight_device_register("fujitsu-laptop", NULL, NULL,
+ &fujitsubl_ops);
+ if (IS_ERR(fujitsu->bl_device))
+ return PTR_ERR(fujitsu->bl_device);
+ max_brightness = fujitsu->max_brightness;
+ fujitsu->bl_device->props.max_brightness = max_brightness - 1;
+ fujitsu->bl_device->props.brightness = fujitsu->brightness_level;
+ }
ret = platform_driver_register(&fujitsupf_driver);
if (ret)
@@ -1035,7 +1035,8 @@ fail_hotkey:
fail_backlight:
- backlight_device_unregister(fujitsu->bl_device);
+ if (fujitsu->bl_device)
+ backlight_device_unregister(fujitsu->bl_device);
fail_platform_device2:
@@ -1062,7 +1063,8 @@ static void __exit fujitsu_cleanup(void)
&fujitsupf_attribute_group);
platform_device_unregister(fujitsu->pf_device);
platform_driver_unregister(&fujitsupf_driver);
- backlight_device_unregister(fujitsu->bl_device);
+ if (fujitsu->bl_device)
+ backlight_device_unregister(fujitsu->bl_device);
acpi_bus_unregister_driver(&acpi_fujitsu_driver);