usb: misc: legousbtower: Fix NULL pointer deference

[pandora-kernel.git] / drivers / usb / misc / legousbtower.c

diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c
index a989356..1d65211 100644 (file)
--- a/drivers/usb/misc/legousbtower.c
+++ b/drivers/usb/misc/legousbtower.c
@@ -951,24 +951,6 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device
        dev->interrupt_in_interval = interrupt_in_interval ? interrupt_in_interval : dev->interrupt_in_endpoint->bInterval;
        dev->interrupt_out_interval = interrupt_out_interval ? interrupt_out_interval : dev->interrupt_out_endpoint->bInterval;
 
-       /* we can register the device now, as it is ready */
-       usb_set_intfdata (interface, dev);
-
-       retval = usb_register_dev (interface, &tower_class);
-
-       if (retval) {
-               /* something prevented us from registering this driver */
-               err ("Not able to get a minor for this device.");
-               usb_set_intfdata (interface, NULL);
-               goto error;
-       }
-       dev->minor = interface->minor;
-
-       /* let the user know what node this device is now attached to */
-       dev_info(&interface->dev, "LEGO USB Tower #%d now attached to major "
-                "%d minor %d\n", (dev->minor - LEGO_USB_TOWER_MINOR_BASE),
-                USB_MAJOR, dev->minor);
-
        /* get the firmware version and log it */
        result = usb_control_msg (udev,
                                  usb_rcvctrlpipe(udev, 0),
@@ -989,6 +971,23 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device
                 get_version_reply.minor,
                 le16_to_cpu(get_version_reply.build_no));
 
+       /* we can register the device now, as it is ready */
+       usb_set_intfdata (interface, dev);
+
+       retval = usb_register_dev (interface, &tower_class);
+
+       if (retval) {
+               /* something prevented us from registering this driver */
+               err ("Not able to get a minor for this device.");
+               usb_set_intfdata (interface, NULL);
+               goto error;
+       }
+       dev->minor = interface->minor;
+
+       /* let the user know what node this device is now attached to */
+       dev_info(&interface->dev, "LEGO USB Tower #%d now attached to major "
+                "%d minor %d\n", (dev->minor - LEGO_USB_TOWER_MINOR_BASE),
+                USB_MAJOR, dev->minor);
 
 exit:
        dbg(2, "%s: leave, return value 0x%.8lx (dev)", __func__, (long) dev);