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authorLinus Torvalds <torvalds@linux-foundation.org>2008-04-05 12:14:13 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-05 12:14:13 -0700
commit797de7bdb253624c16144f40b72ec65d63cdcca2 (patch)
treea0d762c96891fff460041870153ca4fee3d66c97 /drivers
parent6fdf5e67fe8d3c83500dad9acae985132c2459a3 (diff)
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')
-rw-r--r--drivers/acpi/video.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 12fb44f1676..980a7418878 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;