IRP_MJ_PNP

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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.

Requirements

Header

 Wdm.h (include Wdm.h, Ntddk.h, or Ntifs.h)

See also

DispatchPnP