[POWERPC] Fix for via-pmu based backlight control

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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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Benjamin Herrenschmidt 2007-12-20 15:00:21 +11:00 • committed by Paul Mackerras

parent 7ac5dde99e

commit 0094f2cdcf

3 changed files with 42 additions and 34 deletions

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include/linux/pmu.h

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