IBDM_CVS_ALLOCED
if (!(ibdm.ibdm_state & IBDM_CVS_ALLOCED)) {
ibdm.ibdm_state |= IBDM_CVS_ALLOCED;
if (ibdm.ibdm_state & IBDM_CVS_ALLOCED) {
ibdm.ibdm_state &= ~IBDM_CVS_ALLOCED;