From 4704c573fc9fee38dd30f07d02037a7edc42bacd Mon Sep 17 00:00:00 2001
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Date: Thu, 12 Jun 2014 10:16:38 -0700
Subject: [PATCH] drm/i915: Use HAS_PSR to avoid unecessary interactions.

Let's be more conservative and protect platforms that don't
support PSR from unecessary interactions.

Reviewed-by: Vijay Purushothaman <vijay.a.purushothaman@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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