PnpReleaseResourcesInternal

NTSTATUS __fastcall PnpReleaseResourcesInternal(_DEVICE_NODE *DeviceNode){
  _CM_RESOURCE_LIST *ResourceList; 
  _ARBITER_INTERFACE *v3; 
  unsigned int Count; 
  _CM_FULL_RESOURCE_DESCRIPTOR *List; 
  unsigned int v6; 
  _INTERFACE_TYPE InterfaceType; 
  unsigned int BusNumber; 
  _DEVICE_NODE *Parent; 
  int v10; 
  _PI_RESOURCE_ARBITER_ENTRY *p_DeviceArbiterList; 
  _PI_RESOURCE_ARBITER_ENTRY *i; 
  __int64 v13; 
  __int64 v14; 
  _DEVICE_NODE *LegacyBusDeviceNode; 
  _DEVICE_NODE *v17; 
  unsigned int v18; 
  _CM_PARTIAL_RESOURCE_DESCRIPTOR *PartialDescriptors; 
  __int64 v20; 
  __int64 LowPart; 
  __int64 v22[18]; 
  int v23; 
  unsigned int v24; 
  unsigned int v25; 

  memset(v22, 0i64, 0x60u);
  ResourceList = DeviceNode->ResourceList;
  v3 = 0i64;
  v22[1] = (__int64)v22;
  LODWORD(v22[2]) = 0;
  v22[0] = (__int64)v22;
  v22[4] = (__int64)DeviceNode->PhysicalDeviceObject;
  v22[3] = 0i64;
  v22[5] = 4i64;
  v22[6] = 0i64;
  v22[9] = 0i64;
  if( (ResourceList || (ResourceList = DeviceNode->BootResources) != 0i64) && (Count = ResourceList->Count) != 0 )
  {
    List = ResourceList->List;
  }
  else
  {
    Count = 1;
    ResourceList = 0i64;
    List = 0i64;
  }
  v25 = 0;
  v6 = 0;
  if( Count )
  {
    while( ResourceList )
    {
      InterfaceType = List->InterfaceType;
      BusNumber = List->BusNumber;
      v24 = BusNumber;
      if( List->InterfaceType == InterfaceTypeUndefined )
        goto LABEL_28;
LABEL_7:
      if( DeviceNode == (_DEVICE_NODE *)*(&PnpReplaceEvent + 831) )
        Parent = DeviceNode;
      else
        Parent = DeviceNode->Parent;
      v10 = 1;
      v23 = 1;
      if( Parent )
      {
        do
        {
          if( Parent == (_DEVICE_NODE *)*(&PnpReplaceEvent + 831) && v10 )
          {
            LegacyBusDeviceNode = IopFindLegacyBusDeviceNode(InterfaceType, BusNumber);
            Parent = LegacyBusDeviceNode;
            if( LegacyBusDeviceNode == v17 && InterfaceType == Internal )
              Parent = IopFindLegacyBusDeviceNode(Isa, 0i64);
            v23 = (int)v3;
          }
          p_DeviceArbiterList = (_PI_RESOURCE_ARBITER_ENTRY *)&Parent->DeviceArbiterList;
          for( i = (_PI_RESOURCE_ARBITER_ENTRY *)Parent->DeviceArbiterList.Flink;
                i != p_DeviceArbiterList;
                i = (_PI_RESOURCE_ARBITER_ENTRY *)i->DeviceArbiterList.Flink )
          {
            if( i->ArbiterInterface != v3 )
            {
              v23 = (int)v3;
              v22[0] = (__int64)&i->ResourceList;
              v22[1] = (__int64)&i->ResourceList;
              i->ResourceList.Flink = (_LIST_ENTRY *)v22;
              i->ResourceList.Blink = (_LIST_ENTRY *)v22;
              IopCallArbiter(i, ArbiterActionTestAllocation, &i->ResourceList);
              IopCallArbiter(i, ArbiterActionCommitAllocation, 0i64);
              v13 = v22[0];
              v14 = v22[1];
              if( *(__int64 **)(v22[0] + 8) != v22 || *(__int64 **)v22[1] != v22 )
                __fastfail(3u);
              *(_QWORD *)v22[1] = v22[0];
              v3 = 0i64;
              *(_QWORD *)(v13 + 8) = v14;
              v22[1] = (__int64)v22;
              v22[0] = (__int64)v22;
              p_DeviceArbiterList = (_PI_RESOURCE_ARBITER_ENTRY *)&Parent->DeviceArbiterList;
            }
          }
          Parent = Parent->Parent;
          v10 = v23;
          BusNumber = v24;
        }
        while( Parent );
        v6 = v25;
      }
      if( Count > 1 )
      {
        v18 = List->PartialResourceList.Count;
        PartialDescriptors = List->PartialResourceList.PartialDescriptors;
        if( v18 )
        {
          v20 = v18;
          do
          {
            LowPart = (unsigned int)v3;
            if( PartialDescriptors->Type == 5 )
              LowPart = PartialDescriptors->u.Start.anonymous_0.LowPart;
            PartialDescriptors = (_CM_PARTIAL_RESOURCE_DESCRIPTOR *)((char *)PartialDescriptors + LowPart + 20);
            --v20;
          }
          while( v20 );
        }
        List = (_CM_FULL_RESOURCE_DESCRIPTOR *)PartialDescriptors;
      }
      v25 = ++v6;
      if( v6 >= Count )
        return IopWriteAllocatedResourcesToRegistry(DeviceNode, 0i64, 0i64);
    }
    BusNumber = (unsigned int)v3;
    v24 = (unsigned int)v3;
LABEL_28:
    InterfaceType = Isa;
    goto LABEL_7;
  }
  return IopWriteAllocatedResourcesToRegistry(DeviceNode, 0i64, 0i64);
}

Referenced by: