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-rw-r--r--include/hw/boards.h2
-rw-r--r--include/hw/i386/pc.h5
-rw-r--r--include/hw/virtio/virtio-pci.h2
-rw-r--r--include/qom/object.h4
4 files changed, 7 insertions, 6 deletions
diff --git a/include/hw/boards.h b/include/hw/boards.h
index 8556e01e21..765dc8dd35 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -745,7 +745,7 @@ struct MachineState {
     } while (0)
 
 #define DEFINE_MACHINE(namestr, machine_initfn) \
-    static void machine_initfn##_class_init(ObjectClass *oc, void *data) \
+    static void machine_initfn##_class_init(ObjectClass *oc, const void *data) \
     { \
         MachineClass *mc = MACHINE_CLASS(oc); \
         machine_initfn(mc); \
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 8677dc8950..9563674e2d 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -306,7 +306,8 @@ extern GlobalProperty pc_compat_2_4[];
 extern const size_t pc_compat_2_4_len;
 
 #define DEFINE_PC_MACHINE(suffix, namestr, initfn, optsfn) \
-    static void pc_machine_##suffix##_class_init(ObjectClass *oc, void *data) \
+    static void pc_machine_##suffix##_class_init(ObjectClass *oc, \
+                                                 const void *data) \
     { \
         MachineClass *mc = MACHINE_CLASS(oc); \
         optsfn(mc); \
@@ -331,7 +332,7 @@ extern const size_t pc_compat_2_4_len;
     } \
     static void MACHINE_VER_SYM(class_init, namesym, __VA_ARGS__)( \
         ObjectClass *oc, \
-        void *data) \
+        const void *data) \
     { \
         MachineClass *mc = MACHINE_CLASS(oc); \
         MACHINE_VER_SYM(options, namesym, __VA_ARGS__)(mc); \
diff --git a/include/hw/virtio/virtio-pci.h b/include/hw/virtio/virtio-pci.h
index 971c5fabd4..567a9b0a9d 100644
--- a/include/hw/virtio/virtio-pci.h
+++ b/include/hw/virtio/virtio-pci.h
@@ -255,7 +255,7 @@ typedef struct VirtioPCIDeviceTypeInfo {
     size_t class_size;
     void (*instance_init)(Object *obj);
     void (*instance_finalize)(Object *obj);
-    void (*class_init)(ObjectClass *klass, void *data);
+    void (*class_init)(ObjectClass *klass, const void *data);
     InterfaceInfo *interfaces;
 } VirtioPCIDeviceTypeInfo;
 
diff --git a/include/qom/object.h b/include/qom/object.h
index 7bb14ca706..2fb86f00a6 100644
--- a/include/qom/object.h
+++ b/include/qom/object.h
@@ -280,7 +280,7 @@ struct Object
     static void \
     module_obj_name##_finalize(Object *obj); \
     static void \
-    module_obj_name##_class_init(ObjectClass *oc, void *data); \
+    module_obj_name##_class_init(ObjectClass *oc, const void *data); \
     static void \
     module_obj_name##_init(Object *obj); \
     \
@@ -486,7 +486,7 @@ struct TypeInfo
     bool abstract;
     size_t class_size;
 
-    void (*class_init)(ObjectClass *klass, void *data);
+    void (*class_init)(ObjectClass *klass, const void *data);
     void (*class_base_init)(ObjectClass *klass, const void *data);
     void *class_data;