VOID
VfFreeAdapterChannel(
  IN  PDMA_ADAPTER DmaAdapter
  );

Routine Description:

    Hooked version of FreeAdapterChannel. Either this or FreeMapRegisters
    must be called, depending on the return value of AllocateAdapterChannel
    callback -- but not both.

Arguments:

    DmaAdapter -- dma adapter that allocated the adapter channel.

Return Value:

    None.