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Commit 90af2cf6 authored by Zhang Rui's avatar Zhang Rui Committed by Len Brown
Browse files

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: default avatarZhang Rui <rui.zhang@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent d91dfbb4

drivers/acpi/video.c

+5 −3
Original line number Diff line number Diff line
@@ -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;