sony-laptop: do not scribble keyboard backlight registers on resume
Follow-up to commit 294d31e8 ("sony-laptop: don't change keyboard backlight settings"): avoid messing up the state on resume. Leave it to what was before suspending as it's anyway likely that we still don't know what value we should write to the EC registers. This fix is also required in 3.12 Cc: stable@vger.kernel.org Tested-by: NKarol Babioch <karol@babioch.de> Signed-off-by: NMattia Dongili <malattia@linux.it> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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