From: Mugunthan V N <mugunthanvnm@ti.com>
Date: Wed, 27 Mar 2013 04:41:59 +0000 (+0000)
Subject: drivers: net: ethernet: cpsw: use netif_wake_queue() while restarting tx queue
X-Git-Tag: v3.8.6~17
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=28611814bd7dc326d9b4ae31004e5f2231649ff8;p=thirdparty%2Fkernel%2Fstable.git

drivers: net: ethernet: cpsw: use netif_wake_queue() while restarting tx queue

[ Upstream commit b56d6b3fca6d1214dbc9c5655f26e5d4ec04afc8 ]

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>
---

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 40aff684aa23a..b85ca6b2c19bb 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -375,7 +375,7 @@ void cpsw_tx_handler(void *token, int len, int status)
 	struct cpsw_priv	*priv = netdev_priv(ndev);
 
 	if (unlikely(netif_queue_stopped(ndev)))
-		netif_start_queue(ndev);
+		netif_wake_queue(ndev);
 	cpts_tx_timestamp(&priv->cpts, skb);
 	priv->stats.tx_packets++;
 	priv->stats.tx_bytes += len;