1 files changed, 18 insertions, 11 deletions

diff --git a/hw/sparc64/sun4u.c b/hw/sparc64/sun4u.c
index 34a5e7331c..a7214a3fc7 100644
--- a/hw/sparc64/sun4u.c
+++ b/hw/sparc64/sun4u.c
@@ -632,8 +632,12 @@ static const TypeInfo ebus_info = {
     .class_init    = ebus_class_init,
 };
 
+#define TYPE_OPENPROM "openprom"
+#define OPENPROM(obj) OBJECT_CHECK(PROMState, (obj), TYPE_OPENPROM)
+
 typedef struct PROMState {
-    SysBusDevice busdev;
+    SysBusDevice parent_obj;
+
     MemoryRegion prom;
 } PROMState;
 
@@ -651,7 +655,7 @@ static void prom_init(hwaddr addr, const char *bios_name)
     char *filename;
     int ret;
 
-    dev = qdev_create(NULL, "openprom");
+    dev = qdev_create(NULL, TYPE_OPENPROM);
     qdev_init_nofail(dev);
     s = SYS_BUS_DEVICE(dev);
 
@@ -680,7 +684,7 @@ static void prom_init(hwaddr addr, const char *bios_name)
 
 static int prom_init1(SysBusDevice *dev)
 {
-    PROMState *s = FROM_SYSBUS(PROMState, dev);
+    PROMState *s = OPENPROM(dev);
 
     memory_region_init_ram(&s->prom, OBJECT(s), "sun4u.prom", PROM_SIZE_MAX);
     vmstate_register_ram_global(&s->prom);
@@ -703,16 +707,19 @@ static void prom_class_init(ObjectClass *klass, void *data)
 }
 
 static const TypeInfo prom_info = {
-    .name          = "openprom",
+    .name          = TYPE_OPENPROM,
     .parent        = TYPE_SYS_BUS_DEVICE,
     .instance_size = sizeof(PROMState),
     .class_init    = prom_class_init,
 };
 
 
-typedef struct RamDevice
-{
-    SysBusDevice busdev;
+#define TYPE_SUN4U_MEMORY "memory"
+#define SUN4U_RAM(obj) OBJECT_CHECK(RamDevice, (obj), TYPE_SUN4U_MEMORY)
+
+typedef struct RamDevice {
+    SysBusDevice parent_obj;
+
     MemoryRegion ram;
     uint64_t size;
 } RamDevice;
@@ -720,7 +727,7 @@ typedef struct RamDevice
 /* System RAM */
 static int ram_init1(SysBusDevice *dev)
 {
-    RamDevice *d = FROM_SYSBUS(RamDevice, dev);
+    RamDevice *d = SUN4U_RAM(dev);
 
     memory_region_init_ram(&d->ram, OBJECT(d), "sun4u.ram", d->size);
     vmstate_register_ram_global(&d->ram);
@@ -735,10 +742,10 @@ static void ram_init(hwaddr addr, ram_addr_t RAM_size)
     RamDevice *d;
 
     /* allocate RAM */
-    dev = qdev_create(NULL, "memory");
+    dev = qdev_create(NULL, TYPE_SUN4U_MEMORY);
     s = SYS_BUS_DEVICE(dev);
 
-    d = FROM_SYSBUS(RamDevice, s);
+    d = SUN4U_RAM(dev);
     d->size = RAM_size;
     qdev_init_nofail(dev);
 
@@ -760,7 +767,7 @@ static void ram_class_init(ObjectClass *klass, void *data)
 }
 
 static const TypeInfo ram_info = {
-    .name          = "memory",
+    .name          = TYPE_SUN4U_MEMORY,
     .parent        = TYPE_SYS_BUS_DEVICE,
     .instance_size = sizeof(RamDevice),
     .class_init    = ram_class_init,