IOMFB_MAX_CB
if (tag < 0 || tag >= IOMFB_MAX_CB || !dcp->cb_handlers || !dcp->cb_handlers[tag]) {
static const iomfb_cb_handler cb_handlers[IOMFB_MAX_CB] = {
static const iomfb_cb_handler cb_handlers[IOMFB_MAX_CB] = {