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This function releases a mapping that was set up with the NdisMRegisterIoPortRangefunction during driver initialization.
VOID NdisMDeregisterIoPortRange( IN NDIS_HANDLE MiniportAdapterHandle , IN UINT InitialPort , IN UINT NumberOfPorts , IN PVOID PortOffset );
The miniport must pass the same InitialPortand NumberOfPortsparameters to this function that were passed when the MiniportInitializefunction called the NdisMRegisterIoPortRangefunction to get the mapped PortOffsetvalue. That is, a miniport cannot call this function to release a subrange of a mapped port range.
This function can be called from the MiniportInitializeor the MiniportHaltfunction only if MiniportInitializepreviously made a successful call to the NdisMRegisterIoPortRangefunction.
This function also releases the driver's claim on the I/O port range in the registry.
After it calls NdisMRegisterIoPortRange, the miniport can no longer access the NIC's port range with calls to the NdisRaw XXXPort XXXfunctions.
A driver that calls this function runs at IRQL PASSIVE_LEVEL.
|Runs on||Versions||Defined in||Include||Link to|
|Windows CE OS||2.0 and later||Ndis.h|
Note This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.
Last updated on Tuesday, July 13, 2004