From 51f67885842e36e0d0c853795cd02b129e19a20b Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri, 16 Jan 2015 11:34:36 +0200
Subject: [PATCH] drm/i915: Skip uncore lock on earlier gens

With gen < 6 we don't need to take uncore lock as we
don't have anything to protect from concurrent access.

v2: rebase and account for gen9 changes

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> (v1)
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Deepak S <deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Reading git-format-patch failed