ucc_geth: returns NETDEV_TX_BUSY when BD ring is full

Returns NETDEV_TX_BUSY when BD ring is full.

---
drivers/net/ucc_geth.c | 3 ++-

1 files changed, 2 insertions(+), 1 deletions(-)

index 639e1e6..dab88b9 100644
@@ -3607,6 +3607,7 @@ static int ucc_geth_start_xmit(struct sk_buff *skb, struct net_device *dev)

	if (bd == ugeth->confBd[txQ]) {
		if (!netif_queue_stopped(dev))
			netif_stop_queue(dev);
+		return NETDEV_TX_BUSY;
	}

	ugeth->txBd[txQ] = bd;

@@ -3622,7 +3623,7 @@ static int ucc_geth_start_xmit(struct sk_buff *skb, struct net_device *dev)

	spin_unlock_irq(&ugeth->lock);

- return 0;
+ return NETDEV_TX_OK;
}

static int ucc_geth_rx(struct ucc_geth_private *ugeth, u8 rxQ, int rx_work_limit)