From: Mikko Tiihonen <mikko.tiihonen@iki.fi>
Date: Wed, 30 Jan 2013 19:10:04 +0000 (-0500)
Subject: drm/radeon: protect against div by 0 in backend setup
X-Git-Tag: v3.8-rc7~23^2^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f689e3acbd2e48cc4101e0af454193f81af4baaf;p=pandora-kernel.git

drm/radeon: protect against div by 0 in backend setup

Make sure at least one RB is enabled in
r6xx_remap_render_backend() to avoid an division by
zero in some corner cases.

See:
https://bugzilla.redhat.com/show_bug.cgi?id=892233

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

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