[PATCH 4.4 090/115] ppp: Destroy the mutex when cleanup

From: Greg Kroah-Hartman
Date: Mon Dec 18 2017 - 12:54:48 EST

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


From: Gao Feng <gfree.wind@xxxxxxxxxxx>

[ 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@xxxxxxxxxxx>
Acked-by: Guillaume Nault <g.nault@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
drivers/net/ppp/ppp_generic.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -942,6 +942,7 @@ static __net_exit void ppp_exit_net(stru

+ mutex_destroy(&pn->all_ppp_mutex);