From: David S. Miller <davem@davemloft.net>

commit 080bfa1e6d928a5d1f185cc44e5f3c251df06df5 upstream.

This reverts commit 2055a99da8a253a357bdfd359b3338ef3375a26c.

This change rejects legitimate configurations.

A slave doesn't need to exist nor implement ndo_slave_setup.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/bonding/bond_main.c |    8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c

@@ -3918,15 +3918,11 @@ static int bond_neigh_init(struct neighb
 
 	rcu_read_lock();
 	slave = bond_first_slave_rcu(bond);
-	if (!slave) {
-		ret = -EINVAL;
+	if (!slave)
 		goto out;
-	}
 	slave_ops = slave->dev->netdev_ops;
-	if (!slave_ops->ndo_neigh_setup) {
-		ret = -EINVAL;
+	if (!slave_ops->ndo_neigh_setup)
 		goto out;
-	}
 
 	/* TODO: find another way [1] to implement this.
 	 * Passing a zeroed structure is fragile,