Calling scsi_add_host multiple times for concurency

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Hi
My initiator HBA  has 4 ports. Right now  I call scsi_add_host() only once.
Currently I have single queue for all 4 ports where  pending scsi
commands wait till interrupt handler posts response.  I am trying to
add more queue (one per port) to reduce some locking contention.

Can I expect higher concurrency if I call scsi_add_host 4 times , one
for each port. ?
Is it going to work if I call scsi_add_host  4 times and  will
allocate queue (for pending scsi commands) for each scsi host I
registered?
What performance benefits can I expect, if any?

There can be multiple initiators doing I/O  via  my 4 port initiator  HBA.

thankyou
vks
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