netdev - Re: [RFC PATCH 6/6] ppp: add rtnetlink device creation support

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Message-ID: <20160405212222.GD1305@alphalink.fr>
Date:	Tue, 5 Apr 2016 23:22:22 +0200
From:	Guillaume Nault <g.nault@...halink.fr>
To:	walter harms <wharms@....de>
Cc:	netdev@...r.kernel.org, linux-ppp@...r.kernel.org,
	Paul Mackerras <paulus@...ba.org>,
	David Miller <davem@...emloft.net>
Subject: Re: [RFC PATCH 6/6] ppp: add rtnetlink device creation support

On Tue, Apr 05, 2016 at 07:18:14PM +0200, walter harms wrote:
> 
> 
> Am 05.04.2016 02:56, schrieb Guillaume Nault:
> > @@ -1043,12 +1048,39 @@ static int ppp_dev_configure(struct net *src_net, struct net_device *dev,
> >  			     const struct ppp_config *conf)
> >  {
> >  	struct ppp *ppp = netdev_priv(dev);
> > +	struct file *file;
> >  	int indx;
> > +	int err;
> > +
> > +	if (conf->fd < 0) {
> > +		file = conf->file;
> > +		if (!file) {
> > +			err = -EBADF;
> > +			goto out;
> 
> why not just return -EBADF;
> 
> > +		}
> > +	} else {
> > +		file = fget(conf->fd);
> > +		if (!file) {
> > +			err = -EBADF;
> > +			goto out;
> 	
> why not just return -EBADF;
> 
Just because the 'out' label is declared anyway and because this
centralises the return point. But I agree returning -EBADF directly
could be more readable. I don't have strong opinion.