Commit 9216a97a authored by Sony Chacko's avatar Sony Chacko Committed by David S. Miller

qlcnic: add wmb() call in transmit data path.

Call wmb() to ensure writes are complete before
hardware fetches updated Tx descriptors.
Signed-off-by: default avatarSony Chacko <sony.chacko@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 43daa96b
...@@ -772,6 +772,8 @@ netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) ...@@ -772,6 +772,8 @@ netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
tx_ring->tx_stats.tx_bytes += skb->len; tx_ring->tx_stats.tx_bytes += skb->len;
tx_ring->tx_stats.xmit_called++; tx_ring->tx_stats.xmit_called++;
/* Ensure writes are complete before HW fetches Tx descriptors */
wmb();
qlcnic_update_cmd_producer(tx_ring); qlcnic_update_cmd_producer(tx_ring);
return NETDEV_TX_OK; return NETDEV_TX_OK;
......
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