linux-kernel - Re: [PATCH] net: netfilter: nfnetlink: Fixed warning for nfnl_get

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Message-ID: <20130304212338.GA3594@localhost>
Date:	Mon, 4 Mar 2013 22:23:38 +0100
From:	Pablo Neira Ayuso <pablo@...filter.org>
To:	Borislav Petkov <bp@...en8.de>,
	Alexandru Gheorghiu <gheorghiuandru@...il.com>,
	Patrick McHardy <kaber@...sh.net>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: netfilter: nfnetlink: Fixed warning for
 nfnl_get_lock

On Mon, Mar 04, 2013 at 10:05:51PM +0100, Borislav Petkov wrote:
> On Mon, Mar 04, 2013 at 09:43:11PM +0200, Alexandru Gheorghiu wrote:
> > Removed unused function nfnl_get_lock which fixed the following warning:
> > net/netfilter/nfnetlink.c:65:22: warning: ‘nfnl_get_lock’ defined but not used [-Wunused-function]
> > 
> > Signed-off-by: Alexandru Gheorghiu <gheorghiuandru@...il.com>
> > ---
> >  net/netfilter/nfnetlink.c |    5 -----
> >  1 file changed, 5 deletions(-)
> > 
> > diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
> > index d578ec2..44aa0a7 100644
> > --- a/net/netfilter/nfnetlink.c
> > +++ b/net/netfilter/nfnetlink.c
> > @@ -62,11 +62,6 @@ void nfnl_unlock(__u8 subsys_id)
> >  }
> >  EXPORT_SYMBOL_GPL(nfnl_unlock);
> > 
> > -static struct mutex *nfnl_get_lock(__u8 subsys_id)
> > -{
> > -	return &table[subsys_id].mutex;
> > -}
> > -
> 
> I see the same warning here, gcc (Debian 4.7.2-5) 4.7.2.
> 
> Actually this function *is* used a bit further in the same file in
> nfnetlink_rcv_msg().
> 
> But gcc complains for some reason of which I don't even have the
> slightest idea. However, if you declare the above function "static
> inline..." the warning is gone.

Already got a fix for compilation warning in my tree:

http://1984.lsi.us.es/git/nf/commit/?id=9df9e7832391cf699abbf39fc8d95d7e78297462

Thanks!
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