4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jiri Slaby <jslaby@xxxxxxx> [ 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@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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 @@ -1856,7 +1856,7 @@ 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 @@ -285,7 +285,7 @@ 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;