diff options
Diffstat (limited to 'drivers/net/usb/usbnet.c')
| -rw-r--r-- | drivers/net/usb/usbnet.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c index 7f62e2dea28..ca7fc9df1cc 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, |