From: Alex Deucher <alexander.deucher@amd.com>
Date: Fri, 20 Feb 2015 16:51:38 +0000 (-0500)
Subject: drm/radeon: fix atom aux payload size check for writes (v2)
X-Git-Tag: fixes-v4.0-rc2~24^2~2^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=94a47c49fe5dc0c4d1e56bc1286623df3ea53b23;p=pandora-kernel.git

drm/radeon: fix atom aux payload size check for writes (v2)

The atom aux param interface only supports 4 bits for
the total write transfer size (header + payload).  This
limits us to 12 bytes of payload rather than 16.  Add a
check for this. Reads are not affected.

v2: switch to WARN_ON_ONCE

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