ACPI_PCI_ROUTING_TABLE
TempSizeNeeded += (sizeof (ACPI_PCI_ROUTING_TABLE) - 4);
*BufferSizeNeeded = TempSizeNeeded + sizeof (ACPI_PCI_ROUTING_TABLE);
ACPI_PCI_ROUTING_TABLE *UserPrt;
UserPrt = ACPI_CAST_PTR (ACPI_PCI_ROUTING_TABLE, Buffer);
UserPrt = ACPI_CAST_PTR (ACPI_PCI_ROUTING_TABLE, Buffer);
UserPrt->Length = (sizeof (ACPI_PCI_ROUTING_TABLE) - 4);