Comment # 187 on bug 66963 from Sergey

(In reply to comment #183)
> You might also try my 3.14 branch:
> http://cgit.freedesktop.org/~agd5f/linux/log/?h=drm-next-3.14

I've been trying this branch for a week. So far no hanging is seen. Though I
was not turning off my machine too often, mostly sending it to sleep. Will try
to run more shutdown tests.