linux-kernel - [PATCH 4.9 151/177] l2tp: cleanup l2tp_tunnel

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Date:   Mon, 18 Dec 2017 16:49:34 +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, Jiri Slaby <jslaby@...e.cz>,
        Sabrina Dubroca <sd@...asysnail.net>,
        Guillaume Nault <g.nault@...halink.fr>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.9 151/177] l2tp: cleanup l2tp_tunnel_delete calls

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

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

From: Jiri Slaby <jslaby@...e.cz>


[ 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@...e.cz>
Cc: Sabrina Dubroca <sd@...asysnail.net>
Cc: Guillaume Nault <g.nault@...halink.fr>
Cc: David S. Miller <davem@...emloft.net>
Cc: netdev@...r.kernel.org
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/l2tp/l2tp_core.c    |    2 +-
 net/l2tp/l2tp_netlink.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -1944,7 +1944,7 @@ static __net_exit void l2tp_exit_net(str
 
 	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();
 
--- a/net/l2tp/l2tp_netlink.c
+++ b/net/l2tp/l2tp_netlink.c
@@ -287,7 +287,7 @@ static int l2tp_nl_cmd_tunnel_delete(str
 	l2tp_tunnel_notify(&l2tp_nl_family, info,
 			   tunnel, L2TP_CMD_TUNNEL_DELETE);
 
-	(void) l2tp_tunnel_delete(tunnel);
+	l2tp_tunnel_delete(tunnel);
 
 out:
 	return ret;