Subject: Re: Detaching devices
To: Bill Studenmund <>
From: Lennart Augustsson <>
List: tech-kern
Date: 06/28/1999 13:35:04
Bill Studenmund wrote:

> > >  Lennart Augustsson <> wrote:
> >
> > That was never my plan.  Besides, I have no control over when the softc is
> > deallocated.  It happens in config_detach() after the driver's detach routine
> > has finished (successfully).  So at this time there had better be no references
> > it.
> that's what reference counting is for. :-) What you/we need to do is add
> foo_addref and foo_delref routines. When all the references have been
> deleted, the memory goes away.

Yes, I know reference counting can solve the problem.  But the current
attach/detach mechanism doesn't use it.
It would probably be a lot of work to add reference counting to all the
relevant device drivers. :-(

    -- Lennart