2 files changed, 2 insertions, 22 deletions

diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index a78023f669..b386777045 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -129,14 +129,9 @@ static void pci_bus_unrealize(BusState *qbus, Error **errp)
     vmstate_unregister(NULL, &vmstate_pcibus, bus);
 }
 
-static bool pcibus_is_root(PCIBus *bus)
-{
-    return !bus->parent_dev;
-}
-
 static int pcibus_num(PCIBus *bus)
 {
-    if (pcibus_is_root(bus)) {
+    if (pci_bus_is_root(bus)) {
         return 0; /* pci host bridge */
     }
     return bus->parent_dev->config[PCI_SECONDARY_BUS];
@@ -164,7 +159,6 @@ static void pci_bus_class_init(ObjectClass *klass, void *data)
     k->unrealize = pci_bus_unrealize;
     k->reset = pcibus_reset;
 
-    pbc->is_root = pcibus_is_root;
     pbc->bus_num = pcibus_num;
     pbc->numa_node = pcibus_numa_node;
     pbc->allows_extended_config_space = pcibus_allows_extended_config_space;
@@ -398,6 +392,7 @@ static void pci_root_bus_init(PCIBus *bus, DeviceState *parent,
     bus->slot_reserved_mask = 0x0;
     bus->address_space_mem = address_space_mem;
     bus->address_space_io = address_space_io;
+    bus->flags |= PCI_BUS_IS_ROOT;
 
     /* host bridge */
     QLIST_INIT(&bus->child);
@@ -415,11 +410,6 @@ bool pci_bus_is_express(PCIBus *bus)
     return object_dynamic_cast(OBJECT(bus), TYPE_PCIE_BUS);
 }
 
-bool pci_bus_is_root(PCIBus *bus)
-{
-    return PCI_BUS_GET_CLASS(bus)->is_root(bus);
-}
-
 bool pci_bus_allows_extended_config_space(PCIBus *bus)
 {
     return PCI_BUS_GET_CLASS(bus)->allows_extended_config_space(bus);
diff --git a/hw/pci/pcie_host.c b/hw/pci/pcie_host.c
index 553db56778..1ee4945a6d 100644
--- a/hw/pci/pcie_host.c
+++ b/hw/pci/pcie_host.c
@@ -47,11 +47,6 @@ static void pcie_mmcfg_data_write(void *opaque, hwaddr mmcfg_addr,
     }
     addr = PCIE_MMCFG_CONFOFFSET(mmcfg_addr);
     limit = pci_config_size(pci_dev);
-    if (limit <= addr) {
-        /* conventional pci device can be behind pcie-to-pci bridge.
-           256 <= addr < 4K has no effects. */
-        return;
-    }
     pci_host_config_write_common(pci_dev, addr, limit, val, len);
 }
 
@@ -70,11 +65,6 @@ static uint64_t pcie_mmcfg_data_read(void *opaque,
     }
     addr = PCIE_MMCFG_CONFOFFSET(mmcfg_addr);
     limit = pci_config_size(pci_dev);
-    if (limit <= addr) {
-        /* conventional pci device can be behind pcie-to-pci bridge.
-           256 <= addr < 4K has no effects. */
-        return ~0x0;
-    }
     return pci_host_config_read_common(pci_dev, addr, limit, len);
 }