Excerpts from netbsd: 6-Aug-98 Re: PCI setup problem Chris
Torek@BSDI.COM (3638)

> "we found all the
>    devices whose cfdata->cf_driver->cd_aux tells us that they need
>    to be done on pass 1, so now go back and do pass 2"
> [...]
> one could have isa devices
> have a "cd_aux" that says whether they can dynamically allocate
> IRQs

Aha - that is what it was good for.
Obviously nobody could imagine a use for it, so
it got lost in the NetBSD tree.

best regards
Matthias