From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pablo Neira Ayuso Subject: Re: [PATCH RESEND] netfilter: remove unused variable Date: Sat, 4 Jan 2014 00:11:46 +0100 Message-ID: <20140103231146.GA23904@localhost> References: <1388554039-28452-1-git-send-email-mina86@mina86.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Patrick McHardy , Jozsef Kadlecsik , "David S. Miller" , netfilter-devel@vger.kernel.org, netfilter@vger.kernel.org, coreteam@netfilter.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org To: Michal Nazarewicz Return-path: Content-Disposition: inline In-Reply-To: <1388554039-28452-1-git-send-email-mina86@mina86.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netfilter-devel.vger.kernel.org On Wed, Jan 01, 2014 at 06:27:19AM +0100, Michal Nazarewicz wrote: > The nfmsg variable is not used (except in sizeof operator which does > not care about its value) between the first and second time it is > assigned the value. Furthermore, nlmsg_data has no side effects, so > the assignment can be safely removed. Applied with minor glitch, see below. Thanks. > Signed-off-by: Michal Nazarewicz > Cc: Patrick McHardy > --- > net/netfilter/nf_tables_api.c | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c > index f93b7d0..9c56adc 100644 > --- a/net/netfilter/nf_tables_api.c > +++ b/net/netfilter/nf_tables_api.c > @@ -2521,7 +2521,6 @@ static int nf_tables_dump_set(struct sk_buff *skb, struct netlink_callback *cb) > u32 portid, seq; > int event, err; > > - nfmsg = nlmsg_data(cb->nlh); > err = nlmsg_parse(cb->nlh, sizeof(*nfmsg), nla, NFTA_SET_ELEM_LIST_MAX, mangled this patch to use sizeof(struct nfgenmsg) instead. That change is not required from the semantic point of view, of course, but for readability reasons I think it's better not to refer to a variable that is not used in that context. > nft_set_elem_list_policy); > if (err < 0) > -- > 1.8.4 >