From: Thomas Renninger <trenn@xxxxxxx>
Signed-off-by: Thomas Renninger <trenn@xxxxxxx>
Acked-by: Zhang Rui <rui.zhang@xxxxxxxxx>
Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
---
drivers/misc/fujitsu-laptop.c | 26 ++++++++++++++------------
1 files changed, 14 insertions(+), 12 deletions(-)
diff --git a/drivers/misc/fujitsu-laptop.c b/drivers/misc/fujitsu-laptop.c
index d2cf0bf..1070dc1 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);
--
1.6.0.3.640.g6331a
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