[PATCH 17/17] qom: Drop @errp parameter of object_property_del()

[Markus Armbruster]

Same story as for object_property_add(): the only way
object_property_del() can fail is when the property with this name
does not exist.  Since our property names are all hardcoded, failure
is a programming error, and the appropriate way to handle it is
passing &error_abort.  Most callers do that, the commit before
previous fixed one that didn't (and got the error handling wrong), and
the two remaining exceptions ignore errors.

Drop the @errp parameter and assert the precondition instead.

Signed-off-by: Markus Armbruster <address@hidden>
---
 include/qom/object.h       | 2 +-
 hw/core/qdev.c             | 2 +-
 hw/i386/pc_sysfw.c         | 2 +-
 hw/ppc/spapr_drc.c         | 4 ++--
 qom/object.c               | 7 +------
 qom/object_interfaces.c    | 3 +--
 tests/check-qom-proplist.c | 2 +-
 7 files changed, 8 insertions(+), 14 deletions(-)

diff --git a/include/qom/object.h b/include/qom/object.h
index 7458fefc7b..15af9dbbc8 100644
--- a/include/qom/object.h
+++ b/include/qom/object.h
@@ -1047,7 +1047,7 @@ ObjectProperty *object_property_add(Object *obj, const 
char *name,
                                     ObjectPropertyRelease *release,
                                     void *opaque);
 
-void object_property_del(Object *obj, const char *name, Error **errp);
+void object_property_del(Object *obj, const char *name);
 
 ObjectProperty *object_class_property_add(ObjectClass *klass, const char *name,
                                           const char *type,
diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index 64ac9829bd..e26e5a75c9 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -64,7 +64,7 @@ static void bus_remove_child(BusState *bus, DeviceState 
*child)
             bus->num_children--;
 
             /* This gives back ownership of kid->child back to us.  */
-            object_property_del(OBJECT(bus), name, NULL);
+            object_property_del(OBJECT(bus), name);
             object_unref(OBJECT(kid->child));
             g_free(kid);
             return;
diff --git a/hw/i386/pc_sysfw.c b/hw/i386/pc_sysfw.c
index 002133a2d8..2abab3a27c 100644
--- a/hw/i386/pc_sysfw.c
+++ b/hw/i386/pc_sysfw.c
@@ -120,7 +120,7 @@ static void pc_system_flash_cleanup_unused(PCMachineState 
*pcms)
         dev_obj = OBJECT(pcms->flash[i]);
         if (!object_property_get_bool(dev_obj, "realized", &error_abort)) {
             prop_name = g_strdup_printf("pflash%d", i);
-            object_property_del(OBJECT(pcms), prop_name, &error_abort);
+            object_property_del(OBJECT(pcms), prop_name);
             g_free(prop_name);
             object_unparent(dev_obj);
             pcms->flash[i] = NULL;
diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c
index 8b2171f698..b958f8acb5 100644
--- a/hw/ppc/spapr_drc.c
+++ b/hw/ppc/spapr_drc.c
@@ -405,7 +405,7 @@ static void spapr_drc_release(SpaprDrc *drc)
     g_free(drc->fdt);
     drc->fdt = NULL;
     drc->fdt_start_offset = 0;
-    object_property_del(OBJECT(drc), "device", &error_abort);
+    object_property_del(OBJECT(drc), "device");
     drc->dev = NULL;
 }
 
@@ -551,7 +551,7 @@ static void unrealize(DeviceState *d)
     vmstate_unregister(VMSTATE_IF(drc), &vmstate_spapr_drc, drc);
     root_container = container_get(object_get_root(), DRC_CONTAINER_PATH);
     name = g_strdup_printf("%x", spapr_drc_index(drc));
-    object_property_del(root_container, name, &error_abort);
+    object_property_del(root_container, name);
     g_free(name);
 }
 
diff --git a/qom/object.c b/qom/object.c
index 14c7efe127..424cc20987 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -1280,15 +1280,10 @@ ObjectProperty *object_class_property_find(ObjectClass 
*klass, const char *name,
     return prop;
 }
 
-void object_property_del(Object *obj, const char *name, Error **errp)
+void object_property_del(Object *obj, const char *name)
 {
     ObjectProperty *prop = g_hash_table_lookup(obj->properties, name);
 
-    if (!prop) {
-        error_setg(errp, "Property '.%s' not found", name);
-        return;
-    }
-
     if (prop->release) {
         prop->release(obj, name, prop->opaque);
     }
diff --git a/qom/object_interfaces.c b/qom/object_interfaces.c
index 54e14a3a14..5684ed0483 100644
--- a/qom/object_interfaces.c
+++ b/qom/object_interfaces.c
@@ -88,8 +88,7 @@ Object *user_creatable_add_type(const char *type, const char 
*id,
     user_creatable_complete(USER_CREATABLE(obj), &local_err);
     if (local_err) {
         if (id != NULL) {
-            object_property_del(object_get_objects_root(),
-                                id, &error_abort);
+            object_property_del(object_get_objects_root(), id);
         }
         goto out;
     }
diff --git a/tests/check-qom-proplist.c b/tests/check-qom-proplist.c
index 84f48fe592..13a824cfae 100644
--- a/tests/check-qom-proplist.c
+++ b/tests/check-qom-proplist.c
@@ -280,7 +280,7 @@ static void dummy_bus_init(Object *obj)
 static void dummy_bus_unparent(Object *obj)
 {
     DummyBus *bus = DUMMY_BUS(obj);
-    object_property_del(obj->parent, "backend", NULL);
+    object_property_del(obj->parent, "backend");
     object_unparent(OBJECT(bus->backend));
 }
 
-- 
2.21.1