dev = usb_get_intfdata(interface);
usb_set_intfdata(interface, NULL);

/* give back our minor */
usb_deregister_dev(interface, &skel_class);

/* prevent more I/O from starting */
mutex_lock(&dev->io_mutex);
dev->interface = NULL;
mutex_unlock(&dev->io_mutex);

usb_kill_anchored_urbs(&dev->submitted);

/* decrement our usage count */
kref_put(&dev->kref, skel_delete);

dev_info(&interface->dev, "USB Skeleton #%d now disconnected", minor);
}

static void skel_draw_down(struct usb_skel *dev)
{
int time;

time = usb_wait_anchor_empty_timeout(&dev->submitted, 1000);
if (!time)
usb_kill_anchored_urbs(&dev->submitted);
usb_kill_urb(dev->bulk_in_urb);
}

static int skel_suspend(struct usb_interface *intf, pm_message_t message)
{
struct usb_skel *dev = usb_get_intfdata(intf);

if (!dev)
return 0;
skel_draw_down(dev);
return 0;
}

static int skel_resume(struct usb_interface *intf)
{
return 0;
}

static int skel_pre_reset(struct usb_interface *intf)
{
struct usb_skel *dev = usb_get_intfdata(intf);

mutex_lock(&dev->io_mutex);
skel_draw_down(dev);

return 0;
}

static int skel_post_reset(struct usb_interface *intf)
{
struct usb_skel *dev = usb_get_intfdata(intf);

/* we are sure no URBs are active - no locking needed */
dev->errors = -EPIPE;
mutex_unlock(&dev->io_mutex);

return 0;
}

static struct usb_driver skel_driver = {
.name = "skeleton",
.probe = skel_probe,
.disconnect = skel_disconnect,
.suspend = skel_suspend,
.resume = skel_resume,
.pre_reset = skel_pre_reset,
.post_reset = skel_post_reset,
.id_table = skel_table,
.supports_autosuspend = 1,
};

static int __init usb_skel_init(void)
{
int result;

/* register this driver with the USB subsystem */
result = usb_register(&skel_driver);
if (result)
err("usb_register failed. Error number %d", result);

return result;
}

static void __exit usb_skel_exit(void)
{
/* deregister this driver with the USB subsystem */
usb_deregister(&skel_driver);
}

module_init(usb_skel_init);
module_exit(usb_skel_exit);

MODULE_LICENSE("GPL");