DLT_INQ_SZ
buf = kmem_alloc(DLT_INQ_SZ, KM_SLEEP);
kmem_free(buf, DLT_INQ_SZ);
buf = kmem_alloc(DLT_INQ_SZ, KM_SLEEP);
result = st_get_special_inquiry(un, DLT_INQ_SZ, buf, 0xC0);
kmem_free(buf, DLT_INQ_SZ);