[Qemu-devel] [PATCH 2/5] hw/core/sysbus: Add a function for creating and attaching an object

[Thomas Huth]

A lot of functions are initializing an object and attach it immediately
afterwards to the system bus. Provide a common function for this, which
also uses object_initialize_as_child() to make sure that the reference
counter is correctly initialized to 1 afterwards.

Signed-off-by: Thomas Huth <address@hidden>
---
 hw/core/sysbus.c    | 8 ++++++++
 include/hw/sysbus.h | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/hw/core/sysbus.c b/hw/core/sysbus.c
index ecfb0cf..c164318 100644
--- a/hw/core/sysbus.c
+++ b/hw/core/sysbus.c
@@ -376,6 +376,14 @@ BusState *sysbus_get_default(void)
     return main_system_bus;
 }
 
+void sysbus_init_child_obj(Object *parent, const char *childname, void *child,
+                           size_t childsize, const char *childtype)
+{
+    object_initialize_as_child(parent, childname, child, childsize, childtype,
+                               &error_abort);
+    qdev_set_parent_bus(DEVICE(child), sysbus_get_default());
+}
+
 static void sysbus_register_types(void)
 {
     type_register_static(&system_bus_info);
diff --git a/include/hw/sysbus.h b/include/hw/sysbus.h
index e88bb6d..e405232 100644
--- a/include/hw/sysbus.h
+++ b/include/hw/sysbus.h
@@ -96,6 +96,9 @@ void sysbus_add_io(SysBusDevice *dev, hwaddr addr,
                    MemoryRegion *mem);
 MemoryRegion *sysbus_address_space(SysBusDevice *dev);
 
+void sysbus_init_child_obj(Object *parent, const char *childname, void *child,
+                           size_t childsize, const char *childtype);
+
 /* Call func for every dynamically created sysbus device in the system */
 void foreach_dynamic_sysbus_device(FindSysbusDeviceFunc *func, void *opaque);
 
-- 
1.8.3.1