NTSTATUS
CdCompleteMdl(
  IN  PIRP_CONTEXT IrpContext,
  IN  PIRP Irp
  );

Routine Description:

    This routine performs the function of completing Mdl reads.
    It should be called only from CdFsdRead.

Arguments:

    Irp - Supplies the originating Irp.

Return Value:

    NTSTATUS - Will always be STATUS_SUCCESS.