IopSortRelationListForRemove

__int64 __fastcall IopSortRelationListForRemove(__int64 a1){
  INT64 *v2; 
  int v3; 
  __int64 v4; 
  INT64 v5; 
  __int64 v6; 
  unsigned __int64 v7; 
  bool v8; 
  char v9; 
  __int64 v10; 
  LIST_ENTRY *ProviderList; 
  LIST_ENTRY *Flink; 
  int v13; 
  UINT64 DependencyTypes; 
  DEVICE_OBJECT *Provider; 
  Provider = 0i64;
  if( *(_BYTE *)(a1 + 8) )
  {
    return 0;
  }
  else
  {
    PnpAcquireDependencyRelationsLock(0);
    v2 = *(INT64 **)a1;
    v3 = 0;
    v4 = 0i64;
    if( !**(_DWORD **)a1 )
      goto LABEL_19;
    do
    {
      v5 = v2[3 * v4 + 2];
      if( v5 )
        v6 = *(_QWORD *)(*(_QWORD *)(v5 + 312) + 40i64);
      else
        v6 = 0i64;
      v7 = *(_QWORD *)(v6 + 16);
      v8 = (v7 || (v7 = *(_QWORD *)(v6 + 648) & 0xFFFFFFFFFFFFFFFEui64) != 0)
        && PipIsDeviceInDeviceObjectList(v2, *(_QWORD *)(v7 + 32), 0i64);
      v9 = 0;
      ProviderList = PiGetProviderList((DEVICE_OBJECT *)v5);
      Flink = ProviderList->Flink;
      if( ProviderList->Flink != ProviderList )
      {
        while( 1 )
        {
          PiEnumerateProviderListEntry(Flink, &Provider, &DependencyTypes);
          if( Provider )
          {
            if( PipIsDeviceInDeviceObjectList(*(INT64 **)a1, (INT64)Provider, 0i64) )
              break;
          }
          Flink = Flink->Flink;
          if( Flink == ProviderList )
            goto LABEL_8;
        }
        v9 = 1;
      }
LABEL_8:
      if( v8 || v9 )
      {
        *(_DWORD *)(v10 + 24 * v4 + 32) &= ~4u;
      }
      else
      {
        *(_DWORD *)(v10 + 24 * v4 + 32) |= 4u;
        ++v3;
      }
      v2 = *(INT64 **)a1;
      v4 = (unsigned int)(v4 + 1);
    }
    while( (unsigned int)v4 < **(_DWORD **)a1 );
    if( v3 )
    {
      v13 = PipSortDeviceObjectList((unsigned int **)a1);
      if( v13 >= 0 )
        *(_BYTE *)(a1 + 8) = 1;
    }
    else
    {
LABEL_19:
      v13 = -1073741823;
    }
    ExReleaseResourceLite(&PiDependencyRelationsLock);
    PpDevNodeUnlockTree(0);
  }
  return(unsigned int)v13;
}

Referenced by: