On Fri, 13 Oct 2006 10:11:37 -0400
"Steven M. Bellovin" <smb@cs.columbia.edu> wrote:

> This morning, I tried compiling a locally-written network driver and
> got an error, despite not having touched the code in a long time:
> 
> /usr/src/sys/net/if_null.c: In function 'ifnullattach':
> /usr/src/sys/net/if_null.c:113: warning: unused parameter 'count'
> 
> The code says
> 
> 	/* ARGSUSED */
> 	void
> 	ifnullattach(count)
> 	        int count;
> 	{
>  	       LIST_INIT(&null_softc_list);
>         	if_clone_attach(&null_cloner);
> 	}
> 
> It seems that /* ARGSUSED */ is no longer being honored here.  What
> is the proper way to handle this now, and why was the change made?

Christos enabled -Wunused for i386.

Try changing ifnullattach(int count) to ifnullattach(int count
__unused).