IopSortRelationListForRemove

NTSTATUS __stdcall IopSortRelationListForRemove(_RELATION_LIST *RelationList){
  _DEVICE_OBJECT_LIST *DeviceObjectList; 
  int v3; 
  __int64 v4; 
  _DEVICE_OBJECT *DeviceObject; 
  _QWORD *DeviceNode; 
  char v7; 
  char v8; 
  char v9; 
  _DEVICE_OBJECT *v10; 
  __int64 v11; 
  _LIST_ENTRY *ProviderList; 
  _LIST_ENTRY *Flink; 
  int v14; 
  char v16; 
  UINT64 DependencyTypes; 
  _DEVICE_OBJECT *Provider; 

  Provider = 0i64;
  if( RelationList->Sorted )
    return 0;
  PnpAcquireDependencyRelationsLock(0);
  DeviceObjectList = RelationList->DeviceObjectList;
  v3 = 0;
  v4 = 0i64;
  if( !RelationList->DeviceObjectList->Count )
    goto LABEL_19;
  do
  {
    DeviceObject = DeviceObjectList->Devices[v4].DeviceObject;
    if( DeviceObject )
      DeviceNode = DeviceObject->DeviceObjectExtension->DeviceNode;
    else
      DeviceNode = 0i64;
    if( DeviceNode[2] || (DeviceNode[81] & 0xFFFFFFFFFFFFFFFEui64) != 0 )
    {
      PipIsDeviceInDeviceObjectList();
      v8 = v7;
    }
    else
    {
      v8 = 0;
    }
    v9 = 0;
    ProviderList = PiGetProviderList(DeviceObject);
    Flink = ProviderList->Flink;
    if( ProviderList->Flink != ProviderList )
    {
      while( 1 )
      {
        PiEnumerateProviderListEntry(Flink, &Provider, &DependencyTypes);
        v10 = Provider;
        if( Provider )
        {
          PipIsDeviceInDeviceObjectList();
          if( v16 )
            break;
        }
        Flink = Flink->Flink;
        if( Flink == ProviderList )
          goto LABEL_8;
      }
      v9 = 1;
    }
LABEL_8:
    if( v8 || v9 )
    {
      *(_DWORD *)(v11 + 24 * v4 + 32) &= ~4u;
    }
    else
    {
      *(_DWORD *)(v11 + 24 * v4 + 32) |= 4u;
      ++v3;
    }
    DeviceObjectList = RelationList->DeviceObjectList;
    v4 = (unsigned int)(v4 + 1);
  }
  while( (unsigned int)v4 < RelationList->DeviceObjectList->Count );
  if( v3 )
  {
    v14 = PipSortDeviceObjectList(&RelationList->DeviceObjectList, (UINT64)v10);
    if( v14 >= 0 )
      RelationList->Sorted = 1;
  }
  else
  {
LABEL_19:
    v14 = -1073741823;
  }
  ExReleaseResourceLite((PERESOURCE)((char *)&stru_140C452E0 + 384));
  PpDevNodeUnlockTree(PPL_SIMPLE_READ);
  return v14;
}

Referenced by: