Only allocate 1 port for non-zero rids.  Either we'll get the proper length form the enumeration mechanism, or we're dealing with the FDCTL register, which is only 1 port long.
Only allocate 1 port for non-zero rids.  Either we'll get the proper
length form the enumeration mechanism, or we're dealing with the FDCTL
register, which is only 1 port long.

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