From: Michel Dänzer <michel.daenzer@amd.com>
Date: Tue, 29 Jul 2014 09:47:20 +0000 (+0900)
Subject: drm/radeon: Use write-combined CPU mappings of ring buffers with PCIe
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~125^2~6^2~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1490434f0da63afc6006411c8829c6a7935a4e7e;p=pandora-kernel.git

drm/radeon: Use write-combined CPU mappings of ring buffers with PCIe

PCI GART doesn't support unsnooped access. AGP GART already uses
write-combined CPU mappings.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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