linux-kernel - [62/74] drivers: net: ethernet: davinci_emac: use netif_wake

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Date:	Sun, 07 Apr 2013 23:45:43 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org,
	"Dan Franke" <dan.franke@...neider-electric.com>,
	"Eric Dumazet" <edumazet@...gle.com>,
	"Sriramakrishnan A G" <srk@...com>,
	"Mugunthan V N" <mugunthanvnm@...com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [62/74] drivers: net: ethernet: davinci_emac: use 
 netif_wake_queue() while restarting tx queue

3.2.43-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Mugunthan V N <mugunthanvnm@...com>

commit 7e51cde276ca820d526c6c21cf8147df595a36bf upstream.

To restart tx queue use netif_wake_queue() intead of netif_start_queue()
so that net schedule will restart transmission immediately which will
increase network performance while doing huge data transfers.

Reported-by: Dan Franke <dan.franke@...neider-electric.com>
Suggested-by: Sriramakrishnan A G <srk@...com>
Signed-off-by: Mugunthan V N <mugunthanvnm@...com>
Acked-by: Eric Dumazet <edumazet@...gle.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/net/ethernet/ti/davinci_emac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index 22f2788..fd8115e 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -1048,7 +1048,7 @@ static void emac_tx_handler(void *token, int len, int status)
 	struct net_device	*ndev = skb->dev;
 
 	if (unlikely(netif_queue_stopped(ndev)))
-		netif_start_queue(ndev);
+		netif_wake_queue(ndev);
 	ndev->stats.tx_packets++;
 	ndev->stats.tx_bytes += len;
 	dev_kfree_skb_any(skb);

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