[NETPOLL]: fix initialization/NAPI race

[linux-2.6-omap-h63xx.git] / net / core / dev.c

diff --git a/net/core/dev.c b/net/core/dev.c
index 52a3bf7ae177a803b5b77190ec1f34e8070175e5..faf59b02c4bf082179ff67477ab47719e885cafa 100644 (file)
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1696,7 +1696,8 @@ static void net_rx_action(struct softirq_action *h)
        struct softnet_data *queue = &__get_cpu_var(softnet_data);
        unsigned long start_time = jiffies;
        int budget = netdev_budget;
-       
+       void *have;
+
        local_irq_disable();
 
        while (!list_empty(&queue->poll_list)) {
@@ -1709,10 +1710,10 @@ static void net_rx_action(struct softirq_action *h)
 
                dev = list_entry(queue->poll_list.next,
                                 struct net_device, poll_list);
-               netpoll_poll_lock(dev);
+               have = netpoll_poll_lock(dev);
 
                if (dev->quota <= 0 || dev->poll(dev, &budget)) {
-                       netpoll_poll_unlock(dev);
+                       netpoll_poll_unlock(have);
                        local_irq_disable();
                        list_del(&dev->poll_list);
                        list_add_tail(&dev->poll_list, &queue->poll_list);
@@ -1721,7 +1722,7 @@ static void net_rx_action(struct softirq_action *h)
                        else
                                dev->quota = dev->weight;
                } else {
-                       netpoll_poll_unlock(dev);
+                       netpoll_poll_unlock(have);
                        dev_put(dev);
                        local_irq_disable();
                }