VOID
NdisFreeDmaChannel(
IN PNDIS_HANDLE NdisDmaHandle
);
NdisFreeDmaChannel is called by the NIC driver to free a DMA channel allocated by a call to NdisAllocateDmaChannel.
Drivers usually call NdisFreeDmaChannel when they are unloading.
Callers of NdisFreeDmaChannel run at IRQL PASSIVE_LEVEL.