i915kms broken at some commit between r296485 and r297692?

[Sergey Manucharian]

Excerpts from K. Macy's message from Tue 10-May-16 16:52:
> I think hps@ has a fix for this that uses a sequency of DELAY()s. The
> problem is that in freebsd, attach runs before the scheduler is
> running. Consequently, code using sleep primitives tends to hang
> because ticks never advance. The scheduler / threading starts much
> earlier on linux.

Thanks, Macy! I've just get hps's replies, gmail has sent many messages
to spam...

S.