retval = usb_register(&usbfs_driver);
retval = register_filesystem(&usb_fs_type);
int __init usbfs_init(void){	int retval;	retval = usb_register(&usbfs_driver);	if (retval)		return retval;	retval = register_filesystem(&usb_fs_type);	if (retval) {		usb_deregister(&usbfs_driver);		return retval;	}	/* create mount point for usbfs */	usbdir = proc_mkdir("usb", proc_bus);	return 0;}