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Revert "ACPI: Ignore _BQC object when registering backlight device"

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This reverts commit 7c0ea45be4 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 <[email protected]>
Cc: Zhao Yakui <[email protected]>
Cc: Zhang Rui <[email protected]>
Cc: Len Brown <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Linus Torvalds 2008-04-05 12:14:13 -07:00
commit 797de7bdb2
1 changed files with 1 additions and 1 deletions
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2
drivers/acpi/video.c
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@ -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;