qom: Push error reporting to object_property_find()

Avoids duplicated error_set().
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
[AF: Also drop error_set() in object_property_del().]
Signed-off-by: NAndreas Färber <afaerber@suse.de>

hw/qdev.c

@@ -323,7 +323,7 @@ void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd)
     if (nd->netdev)
         qdev_prop_set_netdev(dev, "netdev", nd->netdev);
     if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
-        object_property_find(OBJECT(dev), "vectors")) {
+        object_property_find(OBJECT(dev), "vectors", NULL)) {
         qdev_prop_set_uint32(dev, "vectors", nd->nvectors);
     }
     nd->instantiated = 1;

hw/scsi-bus.c

@@ -214,7 +214,7 @@ SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv,
     if (bootindex >= 0) {
         qdev_prop_set_int32(dev, "bootindex", bootindex);
     }
-    if (object_property_find(OBJECT(dev), "removable")) {
+    if (object_property_find(OBJECT(dev), "removable", NULL)) {
         qdev_prop_set_bit(dev, "removable", removable);
     }
     if (qdev_prop_set_drive(dev, "drive", bdrv) < 0) {

include/qemu/object.h

@@ -639,10 +639,12 @@ void object_property_del(Object *obj, const char *name, struct Error **errp);
  * object_property_find:
  * @obj: the object
  * @name: the name of the property
+ * @errp: returns an error if this function fails
  *
  * Look up a property for an object and return its #ObjectProperty if found.
  */
-ObjectProperty *object_property_find(Object *obj, const char *name);
+ObjectProperty *object_property_find(Object *obj, const char *name,
+                                     struct Error **errp);
 
 void object_unparent(Object *obj);
 

qom/object.c

@@ -672,7 +672,8 @@ void object_property_add(Object *obj, const char *name, const char *type,
     QTAILQ_INSERT_TAIL(&obj->properties, prop, node);
 }
 
-ObjectProperty *object_property_find(Object *obj, const char *name)
+ObjectProperty *object_property_find(Object *obj, const char *name,
+                                     Error **errp)
 {
     ObjectProperty *prop;
 
@@ -682,15 +683,14 @@ ObjectProperty *object_property_find(Object *obj, const char *name)
         }
     }
 
+    error_set(errp, QERR_PROPERTY_NOT_FOUND, "", name);
     return NULL;
 }
 
 void object_property_del(Object *obj, const char *name, Error **errp)
 {
-    ObjectProperty *prop = object_property_find(obj, name);
-
+    ObjectProperty *prop = object_property_find(obj, name, errp);
     if (prop == NULL) {
-        error_set(errp, QERR_PROPERTY_NOT_FOUND, "", name);
         return;
     }
 
@@ -708,10 +708,8 @@ void object_property_del(Object *obj, const char *name, Error **errp)
 void object_property_get(Object *obj, Visitor *v, const char *name,
                          Error **errp)
 {
-    ObjectProperty *prop = object_property_find(obj, name);
-
+    ObjectProperty *prop = object_property_find(obj, name, errp);
     if (prop == NULL) {
-        error_set(errp, QERR_PROPERTY_NOT_FOUND, "", name);
         return;
     }
 
@@ -725,10 +723,8 @@ void object_property_get(Object *obj, Visitor *v, const char *name,
 void object_property_set(Object *obj, Visitor *v, const char *name,
                          Error **errp)
 {
-    ObjectProperty *prop = object_property_find(obj, name);
-
+    ObjectProperty *prop = object_property_find(obj, name, errp);
     if (prop == NULL) {
-        error_set(errp, QERR_PROPERTY_NOT_FOUND, "", name);
         return;
     }
 
@@ -881,10 +877,8 @@ char *object_property_print(Object *obj, const char *name,
 
 const char *object_property_get_type(Object *obj, const char *name, Error **errp)
 {
-    ObjectProperty *prop = object_property_find(obj, name);
-
+    ObjectProperty *prop = object_property_find(obj, name, errp);
     if (prop == NULL) {
-        error_set(errp, QERR_PROPERTY_NOT_FOUND, "", name);
         return NULL;
     }
 
@@ -1067,7 +1061,7 @@ gchar *object_get_canonical_path(Object *obj)
 
 Object *object_resolve_path_component(Object *parent, gchar *part)
 {
-    ObjectProperty *prop = object_property_find(parent, part);
+    ObjectProperty *prop = object_property_find(parent, part, NULL);
     if (prop == NULL) {
         return NULL;
     }