NdisMDeregisterDmaChannel function (ndis.h)

Article
02/22/2024

The NdisMDeregisterDmaChannel function releases a miniport driver's claim on a DMA channel for a NIC.

Syntax

void NdisMDeregisterDmaChannel(
  [in] NDIS_HANDLE MiniportDmaHandle
);

Parameters

[in] MiniportDmaHandle

The DMA handle returned by the NdisMRegisterDmaChannel function.

Return value

None

Remarks

The caller should consider MiniportDmaHandle invalid as soon as it is passed to NdisMDeregisterDmaChannel. This function releases the NIC's claim on the DMA channel in the registry.

NdisMDeregisterDmaChannel can be called only from a miniport driver's MiniportInitializeEx and MiniportHaltEx functions.

Requirements

Requirement	Value
Minimum supported client	Supported for NDIS 6.0 and NDIS 5.1 drivers (see NdisMDeregisterDmaChannel (NDIS 5.1)) in Windows Vista. Supported for NDIS 5.1 drivers (see NdisMDeregisterDmaChannel (NDIS 5.1)) in Windows XP.
Target Platform	Universal
Header	ndis.h (include Ndis.h)
Library	Ndis.lib
IRQL	PASSIVE_LEVEL
DDI compliance rules	Irql_Miniport_Driver_Function(ndis)