diff --git a/hw/block/fdc.c b/hw/block/fdc.c
index 1feb398875..a3250f6fdb 100644
--- a/hw/block/fdc.c
+++ b/hw/block/fdc.c
@@ -2544,7 +2544,7 @@ ISADevice *fdctrl_init_isa(ISABus *bus, DriveInfo **fds)
     DeviceState *dev;
     ISADevice *isadev;
 
-    isadev = isa_try_create(bus, TYPE_ISA_FDC);
+    isadev = isa_try_new(TYPE_ISA_FDC);
     if (!isadev) {
         return NULL;
     }
@@ -2558,7 +2558,7 @@ ISADevice *fdctrl_init_isa(ISABus *bus, DriveInfo **fds)
         qdev_prop_set_drive(dev, "driveB", blk_by_legacy_dinfo(fds[1]),
                             &error_fatal);
     }
-    qdev_init_nofail(dev);
+    isa_realize_and_unref(isadev, bus, &error_fatal);
 
     return isadev;
 }
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index ab2380c01f..30a2b5eb30 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1158,14 +1158,14 @@ static void pc_superio_init(ISABus *isa_bus, bool create_fdctrl, bool no_vmport)
     i8042 = isa_create_simple(isa_bus, "i8042");
     if (!no_vmport) {
         isa_create_simple(isa_bus, TYPE_VMPORT);
-        vmmouse = isa_try_create(isa_bus, "vmmouse");
+        vmmouse = isa_try_new("vmmouse");
     } else {
         vmmouse = NULL;
     }
     if (vmmouse) {
         object_property_set_link(OBJECT(vmmouse), OBJECT(i8042),
                                  "i8042", &error_abort);
-        qdev_init_nofail(DEVICE(vmmouse));
+        isa_realize_and_unref(vmmouse, isa_bus, &error_fatal);
     }
     port92 = isa_create_simple(isa_bus, TYPE_PORT92);
 
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index e0588285a2..ffaf12b006 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -694,12 +694,11 @@ static bool pnv_match_cpu(const char *default_type, const char *cpu_type)
 
 static void pnv_ipmi_bt_init(ISABus *bus, IPMIBmc *bmc, uint32_t irq)
 {
-    Object *obj;
+    ISADevice *dev = isa_new("isa-ipmi-bt");
 
-    obj = OBJECT(isa_create(bus, "isa-ipmi-bt"));
-    object_property_set_link(obj, OBJECT(bmc), "bmc", &error_fatal);
-    object_property_set_int(obj, irq, "irq", &error_fatal);
-    object_property_set_bool(obj, true, "realized", &error_fatal);
+    object_property_set_link(OBJECT(dev), OBJECT(bmc), "bmc", &error_fatal);
+    object_property_set_int(OBJECT(dev), irq, "irq", &error_fatal);
+    isa_realize_and_unref(dev, bus, &error_fatal);
 }
 
 static void pnv_chip_power10_pic_print_info(PnvChip *chip, Monitor *mon)
diff --git a/include/hw/net/ne2000-isa.h b/include/hw/net/ne2000-isa.h
index eef17a680d..af59ee0b02 100644
--- a/include/hw/net/ne2000-isa.h
+++ b/include/hw/net/ne2000-isa.h
@@ -13,6 +13,7 @@
 #include "hw/isa/isa.h"
 #include "hw/qdev-properties.h"
 #include "net/net.h"
+#include "qapi/error.h"
 
 #define TYPE_ISA_NE2000 "ne2k_isa"
 
@@ -23,14 +24,14 @@ static inline ISADevice *isa_ne2000_init(ISABus *bus, int base, int irq,
 
     qemu_check_nic_model(nd, "ne2k_isa");
 
-    d = isa_try_create(bus, TYPE_ISA_NE2000);
+    d = isa_try_new(TYPE_ISA_NE2000);
     if (d) {
         DeviceState *dev = DEVICE(d);
 
         qdev_prop_set_uint32(dev, "iobase", base);
         qdev_prop_set_uint32(dev, "irq",    irq);
         qdev_set_nic_properties(dev, nd);
-        qdev_init_nofail(dev);
+        isa_realize_and_unref(d, bus, &error_fatal);
     }
     return d;
 }