BffPreprocessQueryBusRelations

Description

The callback function for an upper filter driver to preprocess IRP_MN_QUERY_DEVICE_RELATIONS/BusRelations before KMDF. This routine can be passed as EvtDeviceWdmIrpPreprocess into WdfDeviceInitAssignWdmIrpPreprocessCallback for IRP_MJ_PNP/IRP_MN_QUERY_DEVICE_RELATIONS, or be invoked in an upper filter driver's EvtDeviceWdmIrpPreprocess callback function. In the latter case, the upper filter driver must return the value that this routine returns.

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Declaration

NTSTATUS BffPreprocessQueryBusRelations(WDFDEVICE Device, PIRP Irp);

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Parameters

Device	The WDF device object representing an upper filter device object.
Irp	The IRP_MN_QUERY_DEVICE_RELATIONS I/O request packet.

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Return value

The value that WdfDeviceWdmDispatchPreprocessedIrp returns.