diff --git a/hw/i2c/bitbang_i2c.c b/hw/i2c/bitbang_i2c.c
index ac84bf0262..e41cb63daa 100644
--- a/hw/i2c/bitbang_i2c.c
+++ b/hw/i2c/bitbang_i2c.c
@@ -165,9 +165,10 @@ void bitbang_i2c_init(bitbang_i2c_interface *s, I2CBus *bus)
 OBJECT_DECLARE_SIMPLE_TYPE(GPIOI2CState, GPIO_I2C)
 
 struct GPIOI2CState {
+    /*< private >*/
     SysBusDevice parent_obj;
+    /*< public >*/
 
-    MemoryRegion dummy_iomem;
     bitbang_i2c_interface bitbang;
     int last_level;
     qemu_irq out;
@@ -188,12 +189,8 @@ static void gpio_i2c_init(Object *obj)
 {
     DeviceState *dev = DEVICE(obj);
     GPIOI2CState *s = GPIO_I2C(obj);
-    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
     I2CBus *bus;
 
-    memory_region_init(&s->dummy_iomem, obj, "gpio_i2c", 0);
-    sysbus_init_mmio(sbd, &s->dummy_iomem);
-
     bus = i2c_init_bus(dev, "i2c");
     bitbang_i2c_init(&s->bitbang, bus);