From: Alessandro Guido <ag@alessandroguido.name>
Date: Wed, 12 Nov 2008 22:03:28 +0000 (+0100)
Subject: sony-laptop: brightness regression fix
X-Git-Tag: v2.6.28-rc7~55^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=38cfc148e1bc470175b3ad131db7dd7bdcff37ee;p=pandora-kernel.git

sony-laptop: brightness regression fix

After commit 540b8bb9c33935183ceb5bed466a42ad72b2af56:

  sony-laptop: fingers off backlight if video.ko is serving this functionality

I can't set brightness on my sony laptop (nothing in /sys/class/backlight).
dmesg says "sony-laptop: Sony: Brightness ignored, must be controlled by ACPI
video driver".

The function acpi_video_backlight_support returns 0 if we should use the
vendor-specific backlight support, while non-0 if the ACPI generic should
be used. Because of this, the check introduced by the said commit appears
reversed.

Signed-off-by: Alessandro Guido <ag@alessandroguido.name>
Signed-off-by: Len Brown <len.brown@intel.com>
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