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

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

drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c

+2 −0
Original line number Diff line number Diff line
@@ -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.xmit_called++;



	/* Ensure writes are complete before HW fetches Tx descriptors */

	wmb();

	qlcnic_update_cmd_producer(tx_ring);



	return NETDEV_TX_OK;

CRA Git | Maintained and supported by SUSTech CRA and CCSE