607   EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR          *Descriptors;   in ScanPciRootBridgeForRoms()  local
619   Status = IoDev->Configuration(IoDev, (VOID **) &Descriptors);  in ScanPciRootBridgeForRoms()
620   if (EFI_ERROR (Status) || Descriptors == NULL) {  in ScanPciRootBridgeForRoms()
628   while (Descriptors->Desc != ACPI_END_TAG_DESCRIPTOR) {  in ScanPciRootBridgeForRoms()
632     if (Descriptors->ResType == ACPI_ADDRESS_SPACE_TYPE_BUS) {  in ScanPciRootBridgeForRoms()
633       MinBus = (UINT16)Descriptors->AddrRangeMin;  in ScanPciRootBridgeForRoms()
634       MaxBus = (UINT16)Descriptors->AddrRangeMax;  in ScanPciRootBridgeForRoms()
639     if (Descriptors->ResType == ACPI_ADDRESS_SPACE_TYPE_MEM && Descriptors->SpecificFlag == 0) {  in ScanPciRootBridgeForRoms()
643       if (Descriptors->AddrRangeMax < 0x100000000ULL) {  in ScanPciRootBridgeForRoms()
647 …if ((Descriptors->AddrRangeMax - Descriptors->AddrRangeMin) > (RootWindowLimit - RootWindowBase)) {  in ScanPciRootBridgeForRoms()
648           RootWindowBase  = Descriptors->AddrRangeMin;  in ScanPciRootBridgeForRoms()
649           RootWindowLimit = Descriptors->AddrRangeMax;  in ScanPciRootBridgeForRoms()
653     Descriptors ++;  in ScanPciRootBridgeForRoms()