LSI 1030 mpt doesn't work if I build a new kernel

I've been struggling with this for a month or two now.

I installed FreeBSD current 7 with a march snapshot and this work good,
but I've tried to build a new kernel for the 2 month period and building
a kernel causes the mpt driver to panic on boot.

Here is so of the boot message:

mpt1: [GIANT-LOCKED]
mpt1: MPI Version=1.2.14.0
mpt1: mpt_wait_req(4) timed out
mpt1: read_cfg_header timed out
mpt1: mpt_wait_req(6) timed out
mpt1: port 0 enable timed out
mpt1: failed to enable port 0

then this repeats until the system hangs:

mpt0: Address Reply:
SCSI Target Command Buffer Reply _at_ 0xffffffffacc7a200
         IOC Status    Success
         IOCLogInfo    0x00000000
         MsgLength     0x05
         MsgFlags      0x00
         MsgContext    0x0003005d
mpt0: Reply Frame Ignored
mpt0: Default Handler Called: req=0xffffffff80e49050:95
reply_descriptor=dc913980 frame=0xffffffffacc7a300
mpt0: Address Reply:

I was wondering if this is a known problem or if there are any hints on
correcting this?

Rod