class_simple_destroy(pt_class);
class_destroy(pt_class);
static void __exit pt_exit(void){	int unit;	for (unit = 0; unit < PT_UNITS; unit++)		if (pt[unit].present) {			class_simple_device_remove(MKDEV(major, unit));			devfs_remove("pt/%d", unit);			class_simple_device_remove(MKDEV(major, unit + 128));			devfs_remove("pt/%dn", unit);		}	class_simple_destroy(pt_class);	devfs_remove("pt");	unregister_chrdev(major, name);	for (unit = 0; unit < PT_UNITS; unit++)		if (pt[unit].present)			pi_release(pt[unit].pi);}