VDC_DRING_INIT
if ((vdc->initialized & VDC_DRING_INIT) == 0) {
vdc->initialized |= VDC_DRING_INIT;
if (vdc->initialized & VDC_DRING_INIT) {
vdc->initialized &= ~VDC_DRING_INIT;
#define VDC_DRING (VDC_DRING_INIT | VDC_DRING_BOUND | \