USB电源IRP自行处理PoStartNextPowerIrp

 //
 // Even if a driver fails the IRP, it must nevertheless call
 // PoStartNextPowerIrp to inform the Power Manager that it
 // is ready to handle another power IRP.
 //

 PoStartNextPowerIrp(Irp);

 Irp->IoStatus.Status = ntStatus = STATUS_DELETE_PENDING;
 Irp->IoStatus.Information = 0;
 IoCompleteRequest(Irp, IO_NO_INCREMENT);
 return ntStatus;