[PULL 04/15] qom: Reduce use of error_propagate()

[Kevin Wolf <kwolf@redhat.com>]

ERRP_GUARD() makes debugging easier by making sure that &error_abort
still fails at the real origin of the error instead of
error_propagate().

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211008133442.141332-5-kwolf@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 qom/object.c            |  7 +++----
 qom/object_interfaces.c | 19 ++++++-------------
 2 files changed, 9 insertions(+), 17 deletions(-)

diff --git a/qom/object.c b/qom/object.c
index e86cb05b84..6be710bc40 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -1389,7 +1389,7 @@ bool object_property_get(Object *obj, const char *name, Visitor *v,
 bool object_property_set(Object *obj, const char *name, Visitor *v,
                          Error **errp)
 {
-    Error *err = NULL;
+    ERRP_GUARD();
     ObjectProperty *prop = object_property_find_err(obj, name, errp);
 
     if (prop == NULL) {
@@ -1400,9 +1400,8 @@ bool object_property_set(Object *obj, const char *name, Visitor *v,
         error_setg(errp, QERR_PERMISSION_DENIED);
         return false;
     }
-    prop->set(obj, v, name, prop->opaque, &err);
-    error_propagate(errp, err);
-    return !err;
+    prop->set(obj, v, name, prop->opaque, errp);
+    return !*errp;
 }
 
 bool object_property_set_str(Object *obj, const char *name,
diff --git a/qom/object_interfaces.c b/qom/object_interfaces.c
index ad9b56b59a..3b61c195c5 100644
--- a/qom/object_interfaces.c
+++ b/qom/object_interfaces.c
@@ -46,25 +46,18 @@ static void object_set_properties_from_qdict(Object *obj, const QDict *qdict,
                                              Visitor *v, Error **errp)
 {
     const QDictEntry *e;
-    Error *local_err = NULL;
 
-    if (!visit_start_struct(v, NULL, NULL, 0, &local_err)) {
-        goto out;
+    if (!visit_start_struct(v, NULL, NULL, 0, errp)) {
+        return;
     }
     for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) {
-        if (!object_property_set(obj, e->key, v, &local_err)) {
-            break;
+        if (!object_property_set(obj, e->key, v, errp)) {
+            goto out;
         }
     }
-    if (!local_err) {
-        visit_check_struct(v, &local_err);
-    }
-    visit_end_struct(v, NULL);
-
+    visit_check_struct(v, errp);
 out:
-    if (local_err) {
-        error_propagate(errp, local_err);
-    }
+    visit_end_struct(v, NULL);
 }
 
 void object_set_properties_from_keyval(Object *obj, const QDict *qdict,
-- 
2.31.1