From: Alex Deucher <alexander.deucher@amd.com>
Date: Mon, 2 Dec 2013 23:15:51 +0000 (-0500)
Subject: drm/radeon: Fix sideport problems on certain RS690 boards
X-Git-Tag: v3.2.55~41
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e5fdcafb4a311d2b37f00ed425f27f67834eb64b;p=pandora-kernel.git

drm/radeon: Fix sideport problems on certain RS690 boards

commit 8333f0fe133be420ce3fcddfd568c3a559ab274e upstream.

Some RS690 boards with 64MB of sideport memory show up as
having 128MB sideport + 256MB of UMA.  In this case,
just skip the sideport memory and use UMA.  This fixes
rendering corruption and should improve performance.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=35457

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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