Boot-time hang with the CISS driver on HP 385

I haven't had too much spare time to put on it so no idea how this boot 
hangs have been evolved. I've tried once again with yesterday's RELENG_8 
sources with the same results except for the message from the kernel 
(safe boot):

....
ciss0: PERFORMANT Transport
ciss0: can't allocate interrupt
panic: mtx_unlock() of spin mutex (null) _at_ /usr/src/sys/dev/ciss/ciss.c:1903
cpuid = 0
KBD: enter: panic
....

Looking at bios, ciss has irq 7 and that interrupt is shared with iLO 
and bge0 ???. Trying to disable them, from bios, doesn't help. 
RELENG_7_2 run like a charm on that boxes.

I've two of that boxes ready to test whatever you ask :).

Regards,
Raul