(In reply to Médéric Boquien from comment #22)
> Has the patch been committed? I have just tried with Mesa 10.5.1 and the
> freeze is still there. Thanks!

No the patch hasn't been committed. Some developer said the patch is not a
proper fix. Look at this for more information :
http://lists.freedesktop.org/archives/mesa-dev/2015-February/076633.html