From: Alex Deucher <alexander.deucher@amd.com>
Date: Wed, 13 Nov 2013 20:25:35 +0000 (-0500)
Subject: drm/radeon/vm: don't attempt to update ptes if ib allocation fails
X-Git-Tag: v3.13-rc1~3^2~5^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4cc948b94a222c310ae089c36718aac7a03aec90;p=pandora-kernel.git

drm/radeon/vm: don't attempt to update ptes if ib allocation fails

If we fail to allocate an indirect buffer (ib) when updating
the ptes, return an error instead of trying to use the ib.
Avoids a null pointer dereference.

Bug:
https://bugzilla.kernel.org/show_bug.cgi?id=58621

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

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