6.0-stable panic in ohci_softintr when using ucom/uftdi

[Ian Dowse]

In message <200512071328.37867.paul.koch at statseeker.com>, Paul Koch writes:
>As soon at the modem rings, the machine panics.  I don't think the
>modem even gets time to pick up the line.  This doesn't happen on 
>a 5.4-stable box with 6 modems connected, but 5.4-stable appears 
>to have other "hanging" issues, thus why I am trying out 6.0-stable.
>
>Recent changes to ohci.c (1.154.2.1) in this area (2 days ago) ??
>Should I raise a PR ?

I'll see if I can reproduce this later - the only thing I can think
of now that might be responsible is a USB transfer reuse issue that
the old patch here might help with:

	http://people.freebsd.org/~iedowse/releng_5_xfer_reuse.diff

Could you see if that makes any difference? It should apply to
6-stable even though the name says releng_5.

Ian