[added to the 4.1 stable tree] l2tp: cleanup l2tp_tunnel_delete calls

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From: Jiri Slaby <jslaby@xxxxxxx>

This patch has been added to the  stable tree. If you have any
objections, please let us know.

===============

[ Upstream commit 4dc12ffeaeac939097a3f55c881d3dc3523dff0c ]

l2tp_tunnel_delete does not return anything since commit 62b982eeb458
("l2tp: fix race condition in l2tp_tunnel_delete").  But call sites of
l2tp_tunnel_delete still do casts to void to avoid unused return value
warnings.

Kill these now useless casts.

Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
Cc: Sabrina Dubroca <sd@xxxxxxxxxxxxxxx>
Cc: Guillaume Nault <g.nault@xxxxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Acked-by: Guillaume Nault <g.nault@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
 net/l2tp/l2tp_core.c    | 2 +-
 net/l2tp/l2tp_netlink.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 8a1d1542eb2f..0c4de8dd58bf 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -1859,7 +1859,7 @@ static __net_exit void l2tp_exit_net(struct net *net)
 
 	rcu_read_lock_bh();
 	list_for_each_entry_rcu(tunnel, &pn->l2tp_tunnel_list, list) {
-		(void)l2tp_tunnel_delete(tunnel);
+		l2tp_tunnel_delete(tunnel);
 	}
 	rcu_read_unlock_bh();
 }
diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c
index 4c0ce67329ca..1e412ad6ced5 100644
--- a/net/l2tp/l2tp_netlink.c
+++ b/net/l2tp/l2tp_netlink.c
@@ -285,7 +285,7 @@ static int l2tp_nl_cmd_tunnel_delete(struct sk_buff *skb, struct genl_info *info
 	l2tp_tunnel_notify(&l2tp_nl_family, info,
 			   tunnel, L2TP_CMD_TUNNEL_DELETE);
 
-	(void) l2tp_tunnel_delete(tunnel);
+	l2tp_tunnel_delete(tunnel);
 
 out:
 	return ret;
-- 
2.11.0




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