linux-kernel - [PATCH] ipv6: remove unused local variable

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Message-ID: <20210714151533.6210-1-rocco.yue@mediatek.com>
Date:   Wed, 14 Jul 2021 23:15:33 +0800
From:   Rocco Yue <rocco.yue@...iatek.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        David Ahern <dsahern@...nel.org>,
        Jakub Kicinski <kuba@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>, <wsd_upstream@...iatek.com>,
        <rocco.yue@...il.com>, Rocco Yue <rocco.yue@...iatek.com>
Subject: [PATCH] ipv6: remove unused local variable

The local variable "struct net *net" in the two functions of
inet6_rtm_getaddr() and inet6_dump_addr() are actually useless,
so remove them.

Signed-off-by: Rocco Yue <rocco.yue@...iatek.com>
---
 net/ipv6/addrconf.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 3bf685fe64b9..e2f625e39455 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -5211,8 +5211,7 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
 		.netnsid = -1,
 		.type = type,
 	};
-	struct net *net = sock_net(skb->sk);
-	struct net *tgt_net = net;
+	struct net *tgt_net = sock_net(skb->sk);
 	int idx, s_idx, s_ip_idx;
 	int h, s_h;
 	struct net_device *dev;
@@ -5351,7 +5350,7 @@ static int inet6_rtm_valid_getaddr_req(struct sk_buff *skb,
 static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh,
 			     struct netlink_ext_ack *extack)
 {
-	struct net *net = sock_net(in_skb->sk);
+	struct net *tgt_net = sock_net(in_skb->sk);
 	struct inet6_fill_args fillargs = {
 		.portid = NETLINK_CB(in_skb).portid,
 		.seq = nlh->nlmsg_seq,
@@ -5359,7 +5358,6 @@ static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh,
 		.flags = 0,
 		.netnsid = -1,
 	};
-	struct net *tgt_net = net;
 	struct ifaddrmsg *ifm;
 	struct nlattr *tb[IFA_MAX+1];
 	struct in6_addr *addr = NULL, *peer;
-- 
2.18.0