This is a rediff against CVS of the hub patch.  It implements changes 
to allow dynamic size for ports > 7 (the hub uses 8 ports so we run into 
problems).

   The FreeBSD workaround as mentioned in the patch is best explained here:

http://fxr.watson.org/fxr/source/dev/usb/uhub.c#L83

   uhub only allocates 1 byte for a hub that is currently returning 2 
bytes (8 ports).  I've submitted a patch to their bug repository (not 
yet accepted) but it's still good to have the older guests working once 
they do apply it.

   NAK is set to return on no change in hub or port status for the 
status change endpoint.  The specification and diagrams I've seen 
indicate this is correct.  It may be a nuissance to flood the log with 
NAKs, but I believe this can be filtered out by developers quite 
easily.  There are also seems to be noticeable effects which occur when 
the hub doesn't do this.  A very minor one is that win2k polls for port 
9 port status on an 8 port hub (perhaps to check sanity of hub):

frame 1505: pid=SETUP addr=0x02 ep=0 len=8
     data_out= a3 00 00 00 09 00 04 00
     ret=-3