sbd_teardown_instance
int (*sbd_teardown_instance) (int, caddr_t);
sbd_teardown_instance = (int (*) (int, caddr_t))
if (!sbd_teardown_instance) {
rv = (*sbd_teardown_instance)(instance, (caddr_t)&sbdp_info);
int (*sbd_teardown_instance) (int, caddr_t);
sbd_teardown_instance = (int (*) (int, caddr_t))
if (!sbd_teardown_instance) {
rv = (*sbd_teardown_instance)(instance, (caddr_t)&sbdp_info);
extern int sbd_teardown_instance(int, caddr_t);