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Date:   Thu, 7 Dec 2017 15:51:33 +0000
From:   alexander.levin@...izon.com
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Cc:     Gao Feng <gfree.wind@....163.com>,
        "David S . Miller" <davem@...emloft.net>,
        alexander.levin@...izon.com
Subject: [PATCH AUTOSEL for 3.18 44/59] ppp: Destroy the mutex when cleanup

From: Gao Feng <gfree.wind@....163.com>

[ Upstream commit f02b2320b27c16b644691267ee3b5c110846f49e ]

The mutex_destroy only makes sense when enable DEBUG_MUTEX. For the
good readbility, it's better to invoke it in exit func when the init
func invokes mutex_init.

Signed-off-by: Gao Feng <gfree.wind@....163.com>
Acked-by: Guillaume Nault <g.nault@...halink.fr>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
---
 drivers/net/ppp/ppp_generic.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index 3dd1c19756ec..088cbd8e229b 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -916,6 +916,7 @@ static __net_exit void ppp_exit_net(struct net *net)
 {
 	struct ppp_net *pn = net_generic(net, ppp_net_id);
 
+	mutex_destroy(&pn->all_ppp_mutex);
 	idr_destroy(&pn->units_idr);
 }
 
-- 
2.11.0

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