Commit e1efa872 authored May 01, 2015 by françois romieu Committed by David S. Miller May 04, 2015

via-rhine: dma_wmb transmit barrier.



Follow the now usual transmit descriptor update path:
1. content change
2. dma_wmb
3. ownership change

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 810f19bc

drivers/net/ethernet/via/via-rhine.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1849,7 +1849,7 @@ static netdev_tx_t rhine_start_tx(struct sk_buff *skb,

		netdev_sent_queue(dev, skb->len);
		/* lock eth irq */
		wmb();
		dma_wmb();
		rp->tx_ring[entry].tx_status \|= cpu_to_le32(DescOwn);
		wmb();