who create the physical device object of scsi disk

[钢陈]

Hi,
I just joined in the mail list and I want to ask a question.

I have a question about scsiport module. I have seen the code
scsiport.c and tried to find where it create the physical device
object for scsi disk however I didn't find it.  I just saw the
function SpiScanAdapter which would send inquiry scsi command to scsi
miniport driver.

So I want to know who create the pdo for scsi disk?

Gang Chen