stmmac: Fix for nfs hang on multiple reboot

[pandora-kernel.git] / drivers / net / ethernet / stmicro / stmmac / stmmac_main.c

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 72cd190..d4d2bc1 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1174,6 +1174,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
                priv->hw->desc->prepare_tx_desc(desc, 0, len, csum_insertion);
                wmb();
                priv->hw->desc->set_tx_owner(desc);
+               wmb();
        }
 
        /* Interrupt on completition only for the latest segment */
@@ -1189,6 +1190,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
 
        /* To avoid raise condition */
        priv->hw->desc->set_tx_owner(first);
+       wmb();
 
        priv->cur_tx++;
 
@@ -1252,6 +1254,7 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv)
                }
                wmb();
                priv->hw->desc->set_rx_owner(p + entry);
+               wmb();
        }
 }