https://bugs.freedesktop.org/show_bug.cgi?id=79980
--- Comment #51 from Andy Furniss adf.lists@gmail.com --- (In reply to comment #42)
Created attachment 102992 [details] [review] Possible fix v3.
Updated and largely simplified patch.
I'm running the third piglit test with it now and so far the system seems to be stable.
Been running (not piglit) for a few days now without crashing.
I see it and a couple more fixes are now in agd5f drm-fixes-3.16-wip, so will try that.