5.0-stable patches

[thirdparty/kernel/stable-queue.git] / releases / 3.4.39 / drivers-net-ethernet-davinci_emac-use-netif_wake_queue-while-restarting-tx-queue.patch

From 1e6851d901fb77cfc326eb7b10d6b344ac832a49 Mon Sep 17 00:00:00 2001
From: Mugunthan V N <mugunthanvnm@ti.com>
Date: Wed, 27 Mar 2013 04:42:00 +0000
Subject: drivers: net: ethernet: davinci_emac: use netif_wake_queue() while restarting tx queue


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@schneider-electric.com>
Suggested-by: Sriramakrishnan A G <srk@ti.com>
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/ti/davinci_emac.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -1052,7 +1052,7 @@ static void emac_tx_handler(void *token,
 	atomic_dec(&priv->cur_tx);
 
 	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);