From 6bd3110ce6e50fb15c975b26f068d606f4434431 Mon Sep 17 00:00:00 2001
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Thu, 4 Sep 2014 17:46:45 +1000
Subject: [PATCH] drm: powerpc can use a simpler drm_io_prot()

What the code does is equivalent to the x86 code, so let's use
it as well

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Reading git-format-patch failed