[mcs814x] nuport-mac: close possible race condition during start

[openwrt/svn-archive/archive.git] / target / linux / mcs814x / files-3.3 / drivers / net / ethernet / mcs8140 / nuport_mac.c

diff --git 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
index ebf95a65333b47522853c10473637e922b2c896f..8cd3d0e6b6ea42edc773f998452d454aa482eb89 100644 (file)
--- 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);