netdev - [PATCH net-next #3 7/8] via-rhine: dma

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Message-Id: <93280ce9b75e6837d3690354fc05441a2f93d27e.1430509434.git.romieu@fr.zoreil.com>
Date:	Fri,  1 May 2015 22:14:44 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	netdev@...r.kernel.org
Cc:	David Miller <davem@...emloft.net>, Nix <nix@...eri.org.uk>,
	Roger.Luethi.rl@...lgate.ch,
	Bjarke Istrup Pedersen <gurligebis@...too.org>
Subject: [PATCH net-next #3 7/8] 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@...zoreil.com>
---
 drivers/net/ethernet/via/via-rhine.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/via/via-rhine.c b/drivers/net/ethernet/via/via-rhine.c
index 8195fcd..86ca8b2 100644
--- a/drivers/net/ethernet/via/via-rhine.c
+++ b/drivers/net/ethernet/via/via-rhine.c
@@ -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();
 
-- 
Ueimor
--
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