IRP_MJ_PNP

All drivers must be prepared to service IRP_MJ_PNP requests in a DispatchPnP routine.

When Sent

The PnP Manager sends IRP_MJ_PNP requests during enumeration, resource rebalancing, and any other time plug-and-play activity occurs on the system. Drivers can also send certain IRP_MJ_PNP requests, depending on the minor function code.

Input Parameters

Depends on the value at MinorFunction in the current I/O stack location of the IRP. Every IRP_MJ_PNP request specifies a minor function code that identifies the requested PnP action.

Output Parameters

Depends on the value at MinorFunction in the current I/O stack location of the IRP.

Operation

See Plug and Play Minor IRPs for detailed information about IRP_MJ_PNP requests.