linux-kernel - Re: [PATCH] bridge: Use PTR_ERR_OR_ZERO instead if(IS_ERR(...)) + PTR

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Message-ID: <20210125183320.161f0afb@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Mon, 25 Jan 2021 18:33:20 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Nikolay Aleksandrov <nikolay@...dia.com>,
        Jiapeng Zhong <abaci-bugfix@...ux.alibaba.com>
Cc:     <roopa@...dia.com>, <davem@...emloft.net>,
        <natechancellor@...il.com>, <ndesaulniers@...gle.com>,
        <bridge@...ts.linux-foundation.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <clang-built-linux@...glegroups.com>
Subject: Re: [PATCH] bridge: Use PTR_ERR_OR_ZERO instead if(IS_ERR(...)) +
 PTR_ERR

On Mon, 25 Jan 2021 10:23:00 +0200 Nikolay Aleksandrov wrote:
> On 25/01/2021 04:39, Jiapeng Zhong wrote:
> > coccicheck suggested using PTR_ERR_OR_ZERO() and looking at the code.
> > 
> > Fix the following coccicheck warnings:
> > 
> > ./net/bridge/br_multicast.c:1295:7-13: WARNING: PTR_ERR_OR_ZERO can be
> > used.
> > 
> > Reported-by: Abaci <abaci@...ux.alibaba.com>
> > Signed-off-by: Jiapeng Zhong <abaci-bugfix@...ux.alibaba.com>
> > ---
> >  net/bridge/br_multicast.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
> > index 257ac4e..2229d10 100644
> > --- a/net/bridge/br_multicast.c
> > +++ b/net/bridge/br_multicast.c
> > @@ -1292,7 +1292,7 @@ static int br_multicast_add_group(struct net_bridge *br,
> >  	pg = __br_multicast_add_group(br, port, group, src, filter_mode,
> >  				      igmpv2_mldv1, false);
> >  	/* NULL is considered valid for host joined groups */
> > -	err = IS_ERR(pg) ? PTR_ERR(pg) : 0;
> > +	err = PTR_ERR_OR_ZERO(pg);
> >  	spin_unlock(&br->multicast_lock);
> >  
> >  	return err;
> >   
> 
> This should be targeted at net-next.
> Acked-by: Nikolay Aleksandrov <nikolay@...dia.com>

Applied, thanks!