qom: Use typedef for Visitor

No need to repeat 'struct Visitor' when we already have it in
typedefs.h.  Omitting the redundant 'struct' also makes a later
patch easier to search for all object property callbacks that
are associated with a Visitor.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1454075341-13658-18-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

hw/misc/edu.c

@@ -363,8 +363,8 @@ static void pci_edu_uninit(PCIDevice *pdev)
     timer_del(&edu->dma_timer);
 }
 
-static void edu_obj_uint64(Object *obj, struct Visitor *v, void *opaque,
-                const char *name, Error **errp)
+static void edu_obj_uint64(Object *obj, Visitor *v, void *opaque,
+                           const char *name, Error **errp)
 {
     uint64_t *val = opaque;
 

hw/virtio/virtio-balloon.c

@@ -113,7 +113,7 @@ static void balloon_stats_poll_cb(void *opaque)
     s->stats_vq_elem = NULL;
 }
 
-static void balloon_stats_get_all(Object *obj, struct Visitor *v,
+static void balloon_stats_get_all(Object *obj, Visitor *v,
                                   void *opaque, const char *name, Error **errp)
 {
     Error *err = NULL;
@@ -151,15 +151,15 @@ static void balloon_stats_get_all(Object *obj, struct Visitor *v,
     error_propagate(errp, err);
 }
 
-static void balloon_stats_get_poll_interval(Object *obj, struct Visitor *v,
+static void balloon_stats_get_poll_interval(Object *obj, Visitor *v,
                                             void *opaque, const char *name,
                                             Error **errp)
 {
     VirtIOBalloon *s = opaque;
     visit_type_int(v, &s->stats_poll_interval, name, errp);
 }
 
-static void balloon_stats_set_poll_interval(Object *obj, struct Visitor *v,
+static void balloon_stats_set_poll_interval(Object *obj, Visitor *v,
                                             void *opaque, const char *name,
                                             Error **errp)
 {

include/qom/object.h

@@ -18,10 +18,9 @@
 #include <stdint.h>
 #include <stdbool.h>
 #include "qemu/queue.h"
+#include "qemu/typedefs.h"
 #include "qapi/error.h"
 
-struct Visitor;
-
 struct TypeImpl;
 typedef struct TypeImpl *Type;
 
@@ -298,7 +297,7 @@ typedef struct InterfaceInfo InterfaceInfo;
  * Called when trying to get/set a property.
  */
 typedef void (ObjectPropertyAccessor)(Object *obj,
-                                      struct Visitor *v,
+                                      Visitor *v,
                                       void *opaque,
                                       const char *name,
                                       Error **errp);
@@ -1025,7 +1024,7 @@ void object_unparent(Object *obj);
  *
  * Reads a property from a object.
  */
-void object_property_get(Object *obj, struct Visitor *v, const char *name,
+void object_property_get(Object *obj, Visitor *v, const char *name,
                          Error **errp);
 
 /**
@@ -1161,7 +1160,7 @@ void object_property_get_uint16List(Object *obj, const char *name,
  *
  * Writes a property to a object.
  */
-void object_property_set(Object *obj, struct Visitor *v, const char *name,
+void object_property_set(Object *obj, Visitor *v, const char *name,
                          Error **errp);
 
 /**

qom/object.c

@@ -2185,15 +2185,15 @@ typedef struct {
     char *target_name;
 } AliasProperty;
 
-static void property_get_alias(Object *obj, struct Visitor *v, void *opaque,
+static void property_get_alias(Object *obj, Visitor *v, void *opaque,
                                const char *name, Error **errp)
 {
     AliasProperty *prop = opaque;
 
     object_property_get(prop->target_obj, v, prop->target_name, errp);
 }
 
-static void property_set_alias(Object *obj, struct Visitor *v, void *opaque,
+static void property_set_alias(Object *obj, Visitor *v, void *opaque,
                                const char *name, Error **errp)
 {
     AliasProperty *prop = opaque;

target-i386/cpu.c

@@ -2945,7 +2945,7 @@ typedef struct BitProperty {
 } BitProperty;
 
 static void x86_cpu_get_bit_prop(Object *obj,
-                                 struct Visitor *v,
+                                 Visitor *v,
                                  void *opaque,
                                  const char *name,
                                  Error **errp)
@@ -2956,7 +2956,7 @@ static void x86_cpu_get_bit_prop(Object *obj,
 }
 
 static void x86_cpu_set_bit_prop(Object *obj,
-                                 struct Visitor *v,
+                                 Visitor *v,
                                  void *opaque,
                                  const char *name,
                                  Error **errp)