From: Marek Olšák <maraeo@gmail.com>
Date: Tue, 25 Sep 2012 01:34:01 +0000 (+0200)
Subject: drm/radeon: allow MIP_ADDRESS=0 for MSAA textures on Evergreen
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~20^2~3^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=61051afd3540da71c1ac32f17ed663595a0f7ecb;p=pandora-kernel.git

drm/radeon: allow MIP_ADDRESS=0 for MSAA textures on Evergreen

MIP_ADDRESS should point to the resolved FMASK for an MSAA texture.
Setting MIP_ADDRESS to 0 means the FMASK pointer is invalid (the GPU
won't read the memory then).

The userspace has to set MIP_ADDRESS to 0 and *not* emit any relocation
for it.

Signed-off-by: Marek Olšák <maraeo@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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