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Date:   Fri, 22 Mar 2019 12:15:00 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Anders Roxell <anders.roxell@...aro.org>,
        Pablo Neira Ayuso <pablo@...filter.org>
Subject: [PATCH 4.19 147/280] netfilter: ipt_CLUSTERIP: fix warning unused variable cn

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Anders Roxell <anders.roxell@...aro.org>

commit 206b8cc514d7ff2b79dd2d5ad939adc7c493f07a upstream.

When CONFIG_PROC_FS isn't set the variable cn isn't used.

net/ipv4/netfilter/ipt_CLUSTERIP.c: In function ‘clusterip_net_exit’:
net/ipv4/netfilter/ipt_CLUSTERIP.c:849:24: warning: unused variable ‘cn’ [-Wunused-variable]
  struct clusterip_net *cn = clusterip_pernet(net);
                        ^~

Rework so the variable 'cn' is declared inside "#ifdef CONFIG_PROC_FS".

Fixes: b12f7bad5ad3 ("netfilter: ipt_CLUSTERIP: remove wrong WARN_ON_ONCE in netns exit routine")
Signed-off-by: Anders Roxell <anders.roxell@...aro.org>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/ipv4/netfilter/ipt_CLUSTERIP.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -846,9 +846,9 @@ static int clusterip_net_init(struct net
 
 static void clusterip_net_exit(struct net *net)
 {
+#ifdef CONFIG_PROC_FS
 	struct clusterip_net *cn = clusterip_pernet(net);
 
-#ifdef CONFIG_PROC_FS
 	mutex_lock(&cn->mutex);
 	proc_remove(cn->procdir);
 	cn->procdir = NULL;


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