Comment # 4 on bug 60802 from Alexandre Demers

bisected and first bad commit is: 8696e33f06b0c52195152cc6a0e3d52233f486c1
commit 8696e33f06b0c52195152cc6a0e3d52233f486c1
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Thu Dec 13 18:57:07 2012 -0500

    drm/radeon: bump version for CS ioctl support for async DMA

    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>