From: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Date: Tue, 24 Aug 2010 03:46:07 +0000 (+0000)
Subject: mlx4_en: Validate port up prior to transmitting
X-Git-Tag: v2.6.37-rc1~147^2~688
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3005ad40b95168aad530f1179cff47411b3ea8da;p=platform%2Fkernel%2Flinux-exynos.git

mlx4_en: Validate port up prior to transmitting

We might try to use resources which were not activated.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/mlx4/en_tx.c b/drivers/net/mlx4/en_tx.c
index 580968f..3deabd1 100644
--- a/drivers/net/mlx4/en_tx.c
+++ b/drivers/net/mlx4/en_tx.c
@@ -612,6 +612,9 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
 	int lso_header_size;
 	void *fragptr;
 
+	if (!priv->port_up)
+		goto tx_drop;
+
 	real_size = get_real_size(skb, dev, &lso_header_size);
 	if (unlikely(!real_size))
 		goto tx_drop;