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Date:      Wed, 13 Oct 2010 15:46:44 -0400
From:      John Baldwin <jhb@freebsd.org>
To:        "Jung-uk Kim" <jkim@freebsd.org>
Cc:        svn-src-head@freebsd.org, Roman Divacky <rdivacky@freebsd.org>, src-committers@freebsd.org, Rui Paulo <rpaulo@freebsd.org>, svn-src-all@freebsd.org
Subject:   Re: svn commit: r213793 - in head/sys/dev: ce cp
Message-ID:  <201010131546.45048.jhb@freebsd.org>
In-Reply-To: <201010131359.44590.jkim@FreeBSD.org>
References:  <201010131717.o9DHHobD094458@svn.freebsd.org> <20101013172757.GA21579@freebsd.org> <201010131359.44590.jkim@FreeBSD.org>

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On Wednesday, October 13, 2010 1:59:42 pm Jung-uk Kim wrote:
> On Wednesday 13 October 2010 01:27 pm, Roman Divacky wrote:
> > On Wed, Oct 13, 2010 at 05:17:50PM +0000, Rui Paulo wrote:
> > > Author: rpaulo
> > > Date: Wed Oct 13 17:17:50 2010
> > > New Revision: 213793
> > > URL: http://svn.freebsd.org/changeset/base/213793
> > >
> > > Log:
> > >   Don't do a logical AND of the result of strcmp() with a
> > > constant.
> > >
> > >   Found with:	clang
> > >
> > > Modified:
> > >   head/sys/dev/ce/if_ce.c
> > >   head/sys/dev/cp/if_cp.c
> > >
> > > Modified: head/sys/dev/ce/if_ce.c
> > > =================================================================
> > >============= --- head/sys/dev/ce/if_ce.c	Wed Oct 13 17:16:08
> > > 2010	(r213792) +++ head/sys/dev/ce/if_ce.c	Wed Oct 13 17:17:50
> > > 2010	(r213793) @@ -1313,7 +1313,7 @@ static int ce_ioctl (struct
> > > cdev *dev, u IFP2SP(d->ifp)->pp_flags &= ~(PP_FR);
> > >  			IFP2SP(d->ifp)->pp_flags |= PP_KEEPALIVE;
> > >  			d->ifp->if_flags |= PP_CISCO;
> > > -		} else if (! strcmp ("fr", (char*)data) && PP_FR) {
> > > +		} else if (! strcmp ("fr", (char*)data)) {
> >
> > this is wrong I think... the PP_FR was used for compiling in/out
> > support for something.. see the comment:
> >
> > /* If we don't have Cronyx's sppp version, we don't have fr support
> > via sppp */ #ifndef PP_FR
> > #define PP_FR 0
> > #endif
> >
> > note that PP_FR is used in some other places as a flag. I guess
> > that by compiling with something like make -DPP_FR=42 some magic
> > would happen.
> >
> > anyway - this does not look like a bug but like an intent, please
> > revert.
> 
> I think the attached patch should do.

This is certainly more obvious and readable.

-- 
John Baldwin



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