class_simple_device_remove(MKDEV(PP_MAJOR, port->number)); 
class_device_destroy(ppdev_class, MKDEV(PP_MAJOR, port->number)); 
static void pp_detach(struct parport *port){	class_simple_device_remove(MKDEV(PP_MAJOR, port->number));}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/ca8eca6884861c1ce294b05aacfdf9045bba9aff/ppdev.c/buggy/drivers/char/ppdev.c