class_unregister(&umad_class); 
class_destroy(umad_class); 
static void __exit ib_umad_cleanup(void){	ib_unregister_client(&umad_client);	class_unregister(&umad_class);	unregister_chrdev_region(base_dev, IB_UMAD_MAX_PORTS * 2);}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/a74968f8c3b1166cfe0942901b56165f06ab6f60/user_mad.c/clean/drivers/infiniband/core/user_mad.c