smsc9420: fix race in transmit time stamping.

Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/smsc9420.c b/drivers/net/smsc9420.c
index 5555102..459726f 100644 (file)
--- a/drivers/net/smsc9420.c
+++ b/drivers/net/smsc9420.c
@@ -1031,12 +1031,12 @@ static netdev_tx_t smsc9420_hard_start_xmit(struct sk_buff *skb,
        pd->tx_ring[index].status = TDES0_OWN_;
        wmb();
 
+       skb_tx_timestamp(skb);
+
        /* kick the DMA */
        smsc9420_reg_write(pd, TX_POLL_DEMAND, 1);
        smsc9420_pci_flush_write(pd);
 
-       skb_tx_timestamp(skb);
-
        return NETDEV_TX_OK;
 }