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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-05 12:14:13 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-05 12:14:13 -0700 |
| commit | 797de7bdb253624c16144f40b72ec65d63cdcca2 (patch) | |
| tree | a0d762c96891fff460041870153ca4fee3d66c97 /drivers/acpi/video.c | |
| parent | 6fdf5e67fe8d3c83500dad9acae985132c2459a3 (diff) | |
| download | linux-stable-797de7bdb253624c16144f40b72ec65d63cdcca2.tar.gz linux-stable-797de7bdb253624c16144f40b72ec65d63cdcca2.tar.bz2 linux-stable-797de7bdb253624c16144f40b72ec65d63cdcca2.zip | |
Revert "ACPI: Ignore _BQC object when registering backlight device"
This reverts commit 7c0ea45be4f114d85ee35caeead8e1660699c46f which
caused a regression with the backlight being set to off when a laptop
doesn't have a _BQC entry to query the actual backlight value. The code
blindly then falls back on a value of 0.
See
http://bugzilla.kernel.org/show_bug.cgi?id=10387
http://lkml.org/lkml/2008/4/2/366
for details.
Bisected-and-reported-by: Andrey Borzenkov <arvidjaar@mail.ru>
Cc: Zhao Yakui <yakui.zhao@intel.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <len.brown@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/acpi/video.c')
| -rw-r--r-- | drivers/acpi/video.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 12fb44f16766..980a74188781 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -713,7 +713,7 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device) kfree(obj); - if (device->cap._BCL && device->cap._BCM && max_level > 0) { + if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){ int result; static int count = 0; char *name; |