netdev - [PATCH net-next 2/2] cpmac: prevent fatal exception in cpmac_end

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Date:	Sun, 31 May 2009 22:59:15 +0200
From:	Florian Fainelli <florian@...nwrt.org>
To:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: [PATCH net-next 2/2] cpmac: prevent fatal exception in cpmac_end_xmit

From: Stefan Weil <weil@...l.berlios.de>

We should not be stopping the subqueues in cpmac_end_xmit
but rather test the status of them. Replace the calls to
netif_subqueue_stop by __netif_subqueue_stopped. This
fixes an unrecoverable exception from happening when
running the driver.

Signed-off-by: Stefan Weil <weil@...l.berlios.de>
Signed-off-by: Florian Fainelli <florian@...nwrt.org>
---
diff --git a/drivers/net/cpmac.c b/drivers/net/cpmac.c
index 08e2f67..58afafb 100644
--- a/drivers/net/cpmac.c
+++ b/drivers/net/cpmac.c
@@ -615,13 +615,13 @@ static void cpmac_end_xmit(struct net_device *dev, int queue)
 
 		dev_kfree_skb_irq(desc->skb);
 		desc->skb = NULL;
-		if (netif_subqueue_stopped(dev, queue))
+		if (__netif_subqueue_stopped(dev, queue))
 			netif_wake_subqueue(dev, queue);
 	} else {
 		if (netif_msg_tx_err(priv) && net_ratelimit())
 			printk(KERN_WARNING
 			       "%s: end_xmit: spurious interrupt\n", dev->name);
-		if (netif_subqueue_stopped(dev, queue))
+		if (__netif_subqueue_stopped(dev, queue))
 			netif_wake_subqueue(dev, queue);
 	}
 }
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