nuport-mac: close possible race condition during start

SVN-Revision: 33069
13 years ago · 5e877f02b4
parent 35351a28b9
commit 5e877f02b4
1 changed files with 5 additions and 1 deletions
--- a/target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c
+++ b/target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c
@ -809,7 +809,11 @@ static int nuport_mac_open(struct net_device *dev)
 	nuport_mac_reset_rx_dma(priv);

 	/* Start RX DMA */
-	return nuport_mac_start_rx_dma(priv, priv->rx_skb[0]);
+	spin_lock_irqsave(&priv->lock, flags);
+	ret = nuport_mac_start_rx_dma(priv, priv->rx_skb[0]);
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return ret;

 out_rx_skb:
 	nuport_mac_free_rx_ring(priv);