PiProcessResourceRequirementsChanged

NTSTATUS __stdcall PiProcessResourceRequirementsChanged(_PNP_DEVICE_ACTION_ENTRY *Request){
  _DEVICE_OBJECT *DeviceObject; 
  void *DeviceNode; 
  _KEVENT *CompletionEvent; 
  int v5; 
  UINT64 ReallocateResources; 
  UINT64 Synchronous; 
  UINT64 ProcessOnlyIntermediateStates; 
  _ADD_CONTEXT AddContext; 

  AddContext = 0i64;
  DeviceObject = Request->DeviceObject;
  if( DeviceObject )
    DeviceNode = DeviceObject->DeviceObjectExtension->DeviceNode;
  else
    DeviceNode = 0i64;
  ObfReferenceObjectWithTag(DeviceObject, 0x65706E50ui64);
  if( (unsigned int)(*((_DWORD *)DeviceNode + 75) - 787) <= 1 )
  {
    v5 = -1073741738;
  }
  else
  {
    PoFxActivateDevice(Request->DeviceObject);
    *((_DWORD *)DeviceNode + 176) |= 0x40u;
    PipClearDevNodeFlags((_DEVICE_NODE *)DeviceNode, 0x100ui64);
    PipSetDevNodeFlags((_DEVICE_NODE *)DeviceNode, 0x400ui64);
    PipClearDevNodeProblem((_DEVICE_NODE *)DeviceNode);
    if( *((_DWORD *)DeviceNode + 75) == 776 )
    {
      if( Request->RequestArgument )
        PipClearDevNodeFlags((_DEVICE_NODE *)DeviceNode, 0x800ui64);
      else
        PipSetDevNodeFlags((_DEVICE_NODE *)DeviceNode, 0x800ui64);
      PnpReallocateResources((_DEVICE_NODE *)DeviceNode);
      CompletionEvent = Request->CompletionEvent;
      AddContext.DriverStartType = 3;
      AddContext.LoadDriver = *(&PnpReplaceEvent + 6682);
      ObfReferenceObject(*(PVOID *)(*(&PnpReplaceEvent + 831) + 32i64));
      LOBYTE(ProcessOnlyIntermediateStates) = 0;
      LOBYTE(Synchronous) = CompletionEvent != 0i64;
      LOBYTE(ReallocateResources) = 0;
      v5 = PipProcessDevNodeTree(
             *(&PnpReplaceEvent + 831),
             Request,
             &AddContext,
             EnumTypeNone,
             ReallocateResources,
             Synchronous,
             ProcessOnlyIntermediateStates);
      if( v5 < 0 )
        v5 = 0;
    }
    else
    {
      v5 = -1073741823;
    }
  }
  if( (*((_DWORD *)DeviceNode + 176) & 0x40) != 0 )
  {
    PoFxIdleDevice(*((_DEVICE_OBJECT **)DeviceNode + 4));
    *((_DWORD *)DeviceNode + 176) &= ~0x40u;
  }
  ObfDereferenceObjectWithTag(Request->DeviceObject, 0x65706E50ui64);
  return v5;
}

Referenced by: