How to disable devices in -current / 5.2-BETA?

[M. Warner Losh]

In message: <20031202102446.S57336 at pooker.samsco.home>
            Scott Long <scottl at freebsd.org> writes:
: However, having a general mechanism for disabling newbus devices would be
: really nice.

Agreed.  But today and 5.2 you lose.  However, it isn't easy.  What
does disabled mean?  Don't attach?  Don't even probe?  If you don't
probe, then how do you know that the device is aac.0?  If you do
probe, then you get ISA probe routines called that can be
'destructive'.

Warner