From: Gao Feng <gfree.wind@vip.163.com>
Date: Tue, 31 Oct 2017 10:25:37 +0000 (+0800)
Subject: ppp: Destroy the mutex when cleanup
X-Git-Tag: v4.14.8~85
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f7ee900a4f2c76902ce368e93d34b7580cc7ff04;p=platform%2Fkernel%2Flinux-rpi.git

ppp: Destroy the mutex when cleanup


[ 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@vip.163.com>
Acked-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index e365866..bf14c51 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -959,6 +959,7 @@ static __net_exit void ppp_exit_net(struct net *net)
 	unregister_netdevice_many(&list);
 	rtnl_unlock();
 
+	mutex_destroy(&pn->all_ppp_mutex);
 	idr_destroy(&pn->units_idr);
 }