bonding: replace SLAVE_IS_OK() with bond_slave_can_tx()

They're verifying the same thing (except of IFF_UP, which is implied for
netif_running(), which is also a prerequisite).

CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 5a1e7b7..7123205 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3850,14 +3850,14 @@
 	ecmd->duplex = DUPLEX_UNKNOWN;
 	ecmd->port = PORT_OTHER;
 
-	/* Since SLAVE_IS_OK returns false for all inactive or down slaves, we
+	/* Since bond_slave_can_tx returns false for all inactive or down slaves, we
 	 * do not need to check mode.  Though link speed might not represent
 	 * the true receive or transmit bandwidth (not all modes are symmetric)
 	 * this is an accurate maximum.
 	 */
 	read_lock(&bond->lock);
 	bond_for_each_slave(bond, slave, iter) {
-		if (SLAVE_IS_OK(slave)) {
+		if (bond_slave_can_tx(slave)) {
 			if (slave->speed != SPEED_UNKNOWN)
 				speed += slave->speed;
 			if (ecmd->duplex == DUPLEX_UNKNOWN &&