SRB_CLOSE_MASTER_CLOCK
The class driver issues this request to indicate to a stream that it is no longer the master clock for the minidriver.
Return Value
The minidriver should set one of the following as the status in the SRB:
STATUS_SUCCESS
Indicates successful completion of the command.
STATUS_NOT_IMPLEMENTED
Indicates that the function is not supported by the minidriver.
STATUS_IO_DEVICE_ERROR
Indicates that a hardware failure occurred.