From: Michel Dänzer <michel.daenzer@amd.com>
Date: Wed, 4 Feb 2015 01:19:51 +0000 (+0900)
Subject: drm/radeon: Don't try to enable write-combining without PAT
X-Git-Tag: fixes-v4.0-rc1~91^2~2^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a53fa43873b88bad15a2eb1f01dc5efa689625ce;p=pandora-kernel.git

drm/radeon: Don't try to enable write-combining without PAT

Doing so can cause things to become slow.

Print a warning at compile time and an informative message at runtime in
that case.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88758
Cc: stable@vger.kernel.org
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

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