From 94a47c49fe5dc0c4d1e56bc1286623df3ea53b23 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Fri, 20 Feb 2015 11:51:38 -0500
Subject: [PATCH] drm/radeon: fix atom aux payload size check for writes (v2)
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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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