From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Thu, 20 Dec 2007 04:00:21 +0000 (+1100)
Subject: [POWERPC] Fix for via-pmu based backlight control
X-Git-Tag: v2.6.25-rc1~1131^2~204
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0094f2cdcfb6f2132b2ea3b4e85e0f6899c8595b;p=pandora-kernel.git

[POWERPC] Fix for via-pmu based backlight control

This fixes a few issues with via-pmu based backlight control.

First, it fixes a sign problem with the setup of the backlight
curve since the `range' value there -can- (and will) go negative.

Then, it reworks the interaction between this and the via-pmu sleep
code to properly restore backlight on wakeup from sleep.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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