[PATCH 2/9] docs/devel/qom: Fix the doc about OBJECT_DECLARE_SIMPLE_TYPE

[Zhao Liu <zhao1.liu@intel.com>]

Currently, the expansion example of OBJECT_DECLARE_SIMPLE_TYPE "roughly"
reflects what OBJECT_DECLARE_TYPE is doing.

Why "roughly"? Because this line -

>    G_DEFINE_AUTOPTR_CLEANUP_FUNC(MyDeviceClass, object_unref)

- is also wrong for OBJECT_DECLARE_TYPE.

Fix the expansion example of OBJECT_DECLARE_SIMPLE_TYPE, especially
drop that definition of MyDeviceClass.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Daniel P. Berrangé" <berrange@redhat.com>
Cc: Eduardo Habkost <eduardo@habkost.net>
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
---
 docs/devel/qom.rst | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/docs/devel/qom.rst b/docs/devel/qom.rst
index 5870745ba27b..185f4c2f5921 100644
--- a/docs/devel/qom.rst
+++ b/docs/devel/qom.rst
@@ -326,21 +326,12 @@ This is equivalent to the following:
    :caption: Expansion from declaring a simple type
 
    typedef struct MyDevice MyDevice;
-   typedef struct MyDeviceClass MyDeviceClass;
 
-   G_DEFINE_AUTOPTR_CLEANUP_FUNC(MyDeviceClass, object_unref)
+   G_DEFINE_AUTOPTR_CLEANUP_FUNC(MyDevice, object_unref)
 
-   #define MY_DEVICE_GET_CLASS(void *obj) \
-           OBJECT_GET_CLASS(MyDeviceClass, obj, TYPE_MY_DEVICE)
-   #define MY_DEVICE_CLASS(void *klass) \
-           OBJECT_CLASS_CHECK(MyDeviceClass, klass, TYPE_MY_DEVICE)
    #define MY_DEVICE(void *obj)
            OBJECT_CHECK(MyDevice, obj, TYPE_MY_DEVICE)
 
-   struct MyDeviceClass {
-       DeviceClass parent_class;
-   };
-
 The 'struct MyDevice' needs to be declared separately.
 If the type requires virtual functions to be declared in the class
 struct, then the alternative OBJECT_DECLARE_TYPE() macro can be
-- 
2.34.1