USB/gadget/net2280: handle sysfs errors

Signed-off-by: NJeff Garzik <jeff@garzik.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/usb/gadget/net2280.c

@@ -2044,8 +2044,10 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
 		return retval;
 	}
 
-	device_create_file (&dev->pdev->dev, &dev_attr_function);
-	device_create_file (&dev->pdev->dev, &dev_attr_queues);
+	retval = device_create_file (&dev->pdev->dev, &dev_attr_function);
+	if (retval) goto err_unbind;
+	retval = device_create_file (&dev->pdev->dev, &dev_attr_queues);
+	if (retval) goto err_func;
 
 	/* ... then enable host detection and ep0; and we're ready
 	 * for set_configuration as well as eventual disconnect.
@@ -2060,6 +2062,14 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
 
 	/* pci writes may still be posted */
 	return 0;
+
+err_func:
+	device_remove_file (&dev->pdev->dev, &dev_attr_function);
+err_unbind:
+	driver->unbind (&dev->gadget);
+	dev->gadget.dev.driver = NULL;
+	dev->driver = NULL;
+	return retval;
 }
 EXPORT_SYMBOL (usb_gadget_register_driver);
 
@@ -2974,8 +2984,10 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id)
 				: "disabled");
 	the_controller = dev;
 
-	device_register (&dev->gadget.dev);
-	device_create_file (&pdev->dev, &dev_attr_registers);
+	retval = device_register (&dev->gadget.dev);
+	if (retval) goto done;
+	retval = device_create_file (&pdev->dev, &dev_attr_registers);
+	if (retval) goto done;
 
 	return 0;