OSErr VSLDisposeInterruptService( InterruptServiceId serviceID );
VSLDisposeInterruptService disposes of an interrupt service. When a graphics driver is closing for good, so that the card interrupt will no longer be serviced, it should call VSLDisposeInterruptService. The VSL will take over servicing any tasks still in the service.
VSLDisposeInterruptService can only be called at driver install, open, and close times--times when memory management calls are safe.