1 files changed, 16 insertions, 6 deletions

diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 7f62e2dea28f..ca7fc9df1ccf 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -315,7 +315,7 @@ EXPORT_SYMBOL_GPL(usbnet_defer_kevent);
 
 static void rx_complete (struct urb *urb);
 
-static void rx_submit (struct usbnet *dev, struct urb *urb, gfp_t flags)
+static int rx_submit (struct usbnet *dev, struct urb *urb, gfp_t flags)
 {
         struct sk_buff          *skb;
         struct skb_data         *entry;
@@ -327,7 +327,7 @@ static void rx_submit (struct usbnet *dev, struct urb *urb, gfp_t flags)
                 netif_dbg(dev, rx_err, dev->net, "no rx skb\n");
                 usbnet_defer_kevent (dev, EVENT_RX_MEMORY);
                 usb_free_urb (urb);
-                return;
+                return -ENOMEM;
         }
         skb_reserve (skb, NET_IP_ALIGN);
 
@@ -357,6 +357,9 @@ static void rx_submit (struct usbnet *dev, struct urb *urb, gfp_t flags)
                         netif_dbg(dev, ifdown, dev->net, "device gone\n");
                         netif_device_detach (dev->net);
                         break;
+                case -EHOSTUNREACH:
+                        retval = -ENOLINK;
+                        break;
                 default:
                         netif_dbg(dev, rx_err, dev->net,
                                   "rx submit, %d\n", retval);
@@ -374,6 +377,7 @@ static void rx_submit (struct usbnet *dev, struct urb *urb, gfp_t flags)
                 dev_kfree_skb_any (skb);
                 usb_free_urb (urb);
         }
+        return retval;
 }
 
 
@@ -912,6 +916,7 @@ fail_halt:
         /* tasklet could resubmit itself forever if memory is tight */
         if (test_bit (EVENT_RX_MEMORY, &dev->flags)) {
                 struct urb      *urb = NULL;
+                int resched = 1;
 
                 if (netif_running (dev->net))
                         urb = usb_alloc_urb (0, GFP_KERNEL);
@@ -922,10 +927,12 @@ fail_halt:
                         status = usb_autopm_get_interface(dev->intf);
                         if (status < 0)
                                 goto fail_lowmem;
-                        rx_submit (dev, urb, GFP_KERNEL);
+                        if (rx_submit (dev, urb, GFP_KERNEL) == -ENOLINK)
+                                resched = 0;
                         usb_autopm_put_interface(dev->intf);
 fail_lowmem:
-                        tasklet_schedule (&dev->bh);
+                        if (resched)
+                                tasklet_schedule (&dev->bh);
                 }
         }
 
@@ -1175,8 +1182,11 @@ static void usbnet_bh (unsigned long param)
                         // don't refill the queue all at once
                         for (i = 0; i < 10 && dev->rxq.qlen < qlen; i++) {
                                 urb = usb_alloc_urb (0, GFP_ATOMIC);
-                                if (urb != NULL)
-                                        rx_submit (dev, urb, GFP_ATOMIC);
+                                if (urb != NULL) {
+                                        if (rx_submit (dev, urb, GFP_ATOMIC) ==
+                                            -ENOLINK)
+                                                return;
+                                }
                         }
                         if (temp != dev->rxq.qlen)
                                 netif_dbg(dev, link, dev->net,