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Date: Wed, 30 Apr 1997 16:29:05 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199704300629.QAA08621@godzilla.zeta.org.au>
To: bde@zeta.org.au, msmith@atrad.adelaide.edu.au
Subject: Re: Unloading LKMs (was Re: A Desparate Plea for Help...)
Cc: hackers@freebsd.org
Sender: owner-hackers@freebsd.org
X-Loop: FreeBSD.org
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>> to garbage).  Unloading followed by reloading obviously can't work,
>> because the driver only initializes the devsw once.
>
>Um, the driver initialises the devsw on every load, does it not?  eg: 
>
>static int 
>qcam_load (struct lkm_table *lkmtp, int cmd)
>{
>        if (qcam_probe(&qcam_mod_dev)) {
>                qcam_attach(&qcam_mod_dev);
>
>                qcam_drvinit(NULL); /* XXX this shouldn't NEED to be here
>                                     * the LKM code should be doing this
>                                     * for us! */
>...

Oops.  The only related problem for loading is that errors for initializing
the devsw slot are ignored.

Bruce