From b738ca5d68e4051c86e32f46f67a69f3bb9cee5e Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Mon, 18 Aug 2014 12:32:05 -0400
Subject: [PATCH] Revert "drm/radeon: Use write-combined CPU mappings of ring
 buffers with PCIe"

This reverts commit 1490434f0da63afc6006411c8829c6a7935a4e7e.

Several people have reported regressions with this patch on kabini.
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Reading git-format-patch failed