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ACPI video: fix an error when the brightness levels on AC and on Battery are same 

when the brightness level on AC and brightness level on Battery
are same, the level_ac_battery is 1 in the current code,
which is wrong.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Zhang Rui 2009-04-14 11:02:18 +08:00 committed by Len Brown
parent d91dfbb41b
commit 90af2cf620
1 changed files with 5 additions and 3 deletions
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8
drivers/acpi/video.c
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@ -770,10 +770,12 @@ acpi_video_init_brightness(struct acpi_video_device *device)
* In this case, the first two elements in _BCL packages
* are also supported brightness levels that OS should take care of.
*/
for (i = 2; i < count; i++)
if (br->levels[i] == br->levels[0] ||
br->levels[i] == br->levels[1])
for (i = 2; i < count; i++) {
if (br->levels[i] == br->levels[0])
level_ac_battery++;
if (br->levels[i] == br->levels[1])
level_ac_battery++;
}
if (level_ac_battery < 2) {
level_ac_battery = 2 - level_ac_battery;