usbnet: init fault (oops) cleanup, whitespace fixes

This cleans up some error handling paths in usbnet device probing;
one of them could cause oopsing, e.g. with some RNDIS devices.

It also removes some extraneous whitespace.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c
index 43ba61a..de69b18 100644 (file)
--- a/drivers/usb/net/usbnet.c
+++ b/drivers/usb/net/usbnet.c
@@ -147,7 +147,7 @@ int usbnet_get_endpoints(struct usbnet *dev, struct usb_interface *intf)
                if (tmp < 0)
                        return tmp;
        }
-       
+
        dev->in = usb_rcvbulkpipe (dev->udev,
                        in->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
        dev->out = usb_sndbulkpipe (dev->udev,
@@ -327,7 +327,7 @@ static void rx_submit (struct usbnet *dev, struct urb *urb, gfp_t flags)
        if (netif_running (dev->net)
                        && netif_device_present (dev->net)
                        && !test_bit (EVENT_RX_HALT, &dev->flags)) {
-               switch (retval = usb_submit_urb (urb, GFP_ATOMIC)){ 
+               switch (retval = usb_submit_urb (urb, GFP_ATOMIC)){
                case -EPIPE:
                        usbnet_defer_kevent (dev, EVENT_RX_HALT);
                        break;
@@ -443,7 +443,7 @@ block:
            case -EOVERFLOW:
                dev->stats.rx_over_errors++;
                // FALLTHROUGH
-           
+
            default:
                entry->state = rx_cleanup;
                dev->stats.rx_errors++;
@@ -560,7 +560,7 @@ static int usbnet_stop (struct net_device *net)
 
        if (netif_msg_ifdown (dev))
                devinfo (dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld",
-                       dev->stats.rx_packets, dev->stats.tx_packets, 
+                       dev->stats.rx_packets, dev->stats.tx_packets,
                        dev->stats.rx_errors, dev->stats.tx_errors
                        );
 
@@ -578,7 +578,7 @@ static int usbnet_stop (struct net_device *net)
                        devdbg (dev, "waited for %d urb completions", temp);
        }
        dev->wait = NULL;
-       remove_wait_queue (&unlink_wakeup, &wait); 
+       remove_wait_queue (&unlink_wakeup, &wait);
 
        usb_kill_urb(dev->interrupt);
 
@@ -834,7 +834,7 @@ kevent (struct work_struct *work)
        }
 
        if (test_bit (EVENT_LINK_RESET, &dev->flags)) {
-               struct driver_info      *info = dev->driver_info;
+               struct driver_info      *info = dev->driver_info;
                int                     retval = 0;
 
                clear_bit (EVENT_LINK_RESET, &dev->flags);
@@ -1066,7 +1066,7 @@ static void usbnet_bh (unsigned long param)
  * USB Device Driver support
  *
  *-------------------------------------------------------------------------*/
- 
+
 // precondition: never called in_interrupt
 
 void usbnet_disconnect (struct usb_interface *intf)
@@ -1087,7 +1087,7 @@ void usbnet_disconnect (struct usb_interface *intf)
                        intf->dev.driver->name,
                        xdev->bus->bus_name, xdev->devpath,
                        dev->driver_info->description);
-       
+
        net = dev->net;
        unregister_netdev (net);
 
@@ -1111,7 +1111,7 @@ int
 usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 {
        struct usbnet                   *dev;
-       struct net_device               *net;
+       struct net_device               *net;
        struct usb_host_interface       *interface;
        struct driver_info              *info;
        struct usb_device               *xdev;
@@ -1181,6 +1181,9 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
        // NOTE net->name still not usable ...
        if (info->bind) {
                status = info->bind (dev, udev);
+               if (status < 0)
+                       goto out1;
+
                // heuristic:  "usb%d" for links we know are two-host,
                // else "eth%d" when there's reasonable doubt.  userspace
                // can rename the link if it knows better.
@@ -1207,12 +1210,12 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
        if (status == 0 && dev->status)
                status = init_status (dev, udev);
        if (status < 0)
-               goto out1;
+               goto out3;
 
        if (!dev->rx_urb_size)
                dev->rx_urb_size = dev->hard_mtu;
        dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
-       
+
        SET_NETDEV_DEV(net, &udev->dev);
        status = register_netdev (net);
        if (status)
@@ -1255,7 +1258,7 @@ EXPORT_SYMBOL_GPL(usbnet_probe);
 int usbnet_suspend (struct usb_interface *intf, pm_message_t message)
 {
        struct usbnet           *dev = usb_get_intfdata(intf);
-       
+
        /* accelerate emptying of the rx and queues, to avoid
         * having everything error out.
         */
@@ -1286,7 +1289,7 @@ static int __init usbnet_init(void)
                        < sizeof (struct skb_data));
 
        random_ether_addr(node_id);
-       return 0;
+       return 0;
 }
 module_init(usbnet_init);