diff --git a/qemu/include/qom/object.h b/qemu/include/qom/object.h
index bb915186..b7d452e8 100644
--- a/qemu/include/qom/object.h
+++ b/qemu/include/qom/object.h
@@ -651,7 +651,7 @@ ObjectClass *object_get_class(Object *obj);
  *
  * Returns: The QOM typename of @obj.
  */
-const char *object_get_typename(Object *obj);
+const char *object_get_typename(const Object *obj);
 
 /**
  * type_register_static:
@@ -1165,7 +1165,7 @@ typedef enum {
  * callback function.  It allows the link property to be set and never returns
  * an error.
  */
-void object_property_allow_set_link(Object *, const char *,
+void object_property_allow_set_link(const Object *, const char *,
                                     Object *, Error **);
 
 /**
@@ -1198,7 +1198,7 @@ void object_property_allow_set_link(Object *, const char *,
  */
 void object_property_add_link(struct uc_struct *uc, Object *obj, const char *name,
                               const char *type, Object **child,
-                              void (*check)(Object *obj, const char *name,
+                              void (*check)(const Object *obj, const char *name,
                                             Object *val, Error **errp),
                               ObjectPropertyLinkFlags flags,
                               Error **errp);
diff --git a/qemu/qom/object.c b/qemu/qom/object.c
index 87810218..9e16e29e 100644
--- a/qemu/qom/object.c
+++ b/qemu/qom/object.c
@@ -616,7 +616,7 @@ out:
     return ret;
 }
 
-const char *object_get_typename(Object *obj)
+const char *object_get_typename(const Object *obj)
 {
     return obj->class->type->name;
 }
@@ -1211,7 +1211,7 @@ out:
     g_free(type);
 }
 
-void object_property_allow_set_link(Object *obj, const char *name,
+void object_property_allow_set_link(const Object *obj, const char *name,
                                     Object *val, Error **errp)
 {
     /* Allow the link to be set, always */
@@ -1219,7 +1219,7 @@ void object_property_allow_set_link(Object *obj, const char *name,
 
 typedef struct {
     Object **child;
-    void (*check)(Object *, const char *, Object *, Error **);
+    void (*check)(const Object *, const char *, Object *, Error **);
     ObjectPropertyLinkFlags flags;
 } LinkProperty;
 
@@ -1337,7 +1337,7 @@ static void object_release_link_property(struct uc_struct *uc, Object *obj, cons
 
 void object_property_add_link(struct uc_struct *uc, Object *obj, const char *name,
                               const char *type, Object **child,
-                              void (*check)(Object *, const char *,
+                              void (*check)(const Object *, const char *,
                                             Object *, Error **),
                               ObjectPropertyLinkFlags flags,
                               Error **errp)