From 6f0ea9e212b36fe831f104ab2ac7582b9741600a Mon Sep 17 00:00:00 2001
From: Paulo Zanoni <paulo.r.zanoni@intel.com>
Date: Fri, 21 Feb 2014 13:52:28 -0300
Subject: [PATCH] drm/i915: assert we're not runtime suspended when accessing
 registers

I could swear this was already happening in the current code...

Also, put the reads and writes in a generic place, so we don't forget
it again when we add runtime PM support to new platforms.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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