diff --git a/include/hw/pci-host/i440fx.h b/include/hw/pci-host/i440fx.h
index 2d7bae5a45..c988f70890 100644
--- a/include/hw/pci-host/i440fx.h
+++ b/include/hw/pci-host/i440fx.h
@@ -34,14 +34,4 @@ struct PCII440FXState {
 
 #define TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE "igd-passthrough-i440FX"
 
-PCIBus *i440fx_init(const char *pci_type,
-                    DeviceState *dev,
-                    MemoryRegion *address_space_mem,
-                    MemoryRegion *address_space_io,
-                    ram_addr_t below_4g_mem_size,
-                    ram_addr_t above_4g_mem_size,
-                    MemoryRegion *pci_memory,
-                    MemoryRegion *ram_memory);
-
-
 #endif
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 87bee368fc..1df309b8e2 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -126,7 +126,7 @@ static void pc_init1(MachineState *machine,
     MemoryRegion *rom_memory;
     ram_addr_t lowmem;
     uint64_t hole64_size;
-    DeviceState *i440fx_host;
+    Object *i440fx_host;
 
     /*
      * Calculate ram split, for memory below and above 4G.  It's a bit
@@ -201,8 +201,8 @@ static void pc_init1(MachineState *machine,
         pci_memory = g_new(MemoryRegion, 1);
         memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
         rom_memory = pci_memory;
-        i440fx_host = qdev_new(host_type);
-        hole64_size = object_property_get_uint(OBJECT(i440fx_host),
+        i440fx_host = OBJECT(qdev_new(host_type));
+        hole64_size = object_property_get_uint(i440fx_host,
                                                PCI_HOST_PROP_PCI_HOLE64_SIZE,
                                                &error_abort);
     } else {
@@ -243,12 +243,24 @@ static void pc_init1(MachineState *machine,
         PIIX3State *piix3;
         PCIDevice *pci_dev;
 
-        pci_bus = i440fx_init(pci_type,
-                              i440fx_host,
-                              system_memory, system_io,
-                              x86ms->below_4g_mem_size,
-                              x86ms->above_4g_mem_size,
-                              pci_memory, ram_memory);
+        object_property_add_child(OBJECT(machine), "i440fx", i440fx_host);
+        object_property_set_link(i440fx_host, PCI_HOST_PROP_RAM_MEM,
+                                 OBJECT(ram_memory), &error_fatal);
+        object_property_set_link(i440fx_host, PCI_HOST_PROP_PCI_MEM,
+                                 OBJECT(pci_memory), &error_fatal);
+        object_property_set_link(i440fx_host, PCI_HOST_PROP_SYSTEM_MEM,
+                                 OBJECT(system_memory), &error_fatal);
+        object_property_set_link(i440fx_host, PCI_HOST_PROP_IO_MEM,
+                                 OBJECT(system_io), &error_fatal);
+        object_property_set_uint(i440fx_host, PCI_HOST_BELOW_4G_MEM_SIZE,
+                                 x86ms->below_4g_mem_size, &error_fatal);
+        object_property_set_uint(i440fx_host, PCI_HOST_ABOVE_4G_MEM_SIZE,
+                                 x86ms->above_4g_mem_size, &error_fatal);
+        object_property_set_str(i440fx_host, I440FX_HOST_PROP_PCI_TYPE,
+                                pci_type, &error_fatal);
+        sysbus_realize_and_unref(SYS_BUS_DEVICE(i440fx_host), &error_fatal);
+
+        pci_bus = PCI_BUS(qdev_get_child_bus(DEVICE(i440fx_host), "pci.0"));
         pci_bus_map_irqs(pci_bus,
                          xen_enabled() ? xen_pci_slot_get_pirq
                                        : pc_pci_slot_get_pirq);
diff --git a/hw/pci-host/i440fx.c b/hw/pci-host/i440fx.c
index e8e66afc11..62d6287681 100644
--- a/hw/pci-host/i440fx.c
+++ b/hw/pci-host/i440fx.c
@@ -249,9 +249,14 @@ static void i440fx_pcihost_initfn(Object *obj)
 
 static void i440fx_pcihost_realize(DeviceState *dev, Error **errp)
 {
+    ERRP_GUARD();
     I440FXState *s = I440FX_PCI_HOST_BRIDGE(dev);
     PCIHostState *phb = PCI_HOST_BRIDGE(dev);
     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+    PCIBus *b;
+    PCIDevice *d;
+    PCII440FXState *f;
+    unsigned i;
 
     memory_region_add_subregion(s->io_memory, 0xcf8, &phb->conf_mem);
     sysbus_init_ioports(sbd, 0xcf8, 4);
@@ -262,37 +267,10 @@ static void i440fx_pcihost_realize(DeviceState *dev, Error **errp)
     /* register i440fx 0xcf8 port as coalesced pio */
     memory_region_set_flush_coalesced(&phb->data_mem);
     memory_region_add_coalescing(&phb->conf_mem, 0, 4);
-}
-
-PCIBus *i440fx_init(const char *pci_type,
-                    DeviceState *dev,
-                    MemoryRegion *address_space_mem,
-                    MemoryRegion *address_space_io,
-                    ram_addr_t below_4g_mem_size,
-                    ram_addr_t above_4g_mem_size,
-                    MemoryRegion *pci_address_space,
-                    MemoryRegion *ram_memory)
-{
-    I440FXState *s = I440FX_PCI_HOST_BRIDGE(dev);
-    PCIHostState *phb = PCI_HOST_BRIDGE(dev);
-    PCIBus *b;
-    PCIDevice *d;
-    PCII440FXState *f;
-    unsigned i;
-
-    s->system_memory = address_space_mem;
-    s->io_memory = address_space_io;
-    s->pci_address_space = pci_address_space;
-    s->ram_memory = ram_memory;
-    s->below_4g_mem_size = below_4g_mem_size;
-    s->above_4g_mem_size = above_4g_mem_size;
-    s->pci_type = (char *)pci_type;
 
     b = pci_root_bus_new(dev, NULL, s->pci_address_space,
                          s->io_memory, 0, TYPE_PCI_BUS);
     phb->bus = b;
-    object_property_add_child(qdev_get_machine(), "i440fx", OBJECT(dev));
-    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
 
     d = pci_create_simple(b, 0, s->pci_type);
     f = I440FX_PCI_DEVICE(d);
@@ -336,8 +314,6 @@ PCIBus *i440fx_init(const char *pci_type,
     d->config[I440FX_COREBOOT_RAM_SIZE] = ram_size;
 
     i440fx_update_memory_mappings(f);
-
-    return b;
 }
 
 static void i440fx_class_init(ObjectClass *klass, void *data)
