From 778a2dc59213d789f5bf8409547b529af4eb9ead Mon Sep 17 00:00:00 2001
From: Markus Armbruster <armbru@redhat.com>
Date: Tue, 7 Jul 2020 18:05:56 +0200
Subject: qom: Use returned bool to check for failure, Coccinelle part

The previous commit enables conversion of

    foo(..., &err);
    if (err) {
        ...
    }

to

    if (!foo(..., errp)) {
        ...
    }

for QOM functions that now return true / false on success / error.
Coccinelle script:

    @@
    identifier fun = {
        object_apply_global_props, object_initialize_child_with_props,
        object_initialize_child_with_propsv, object_property_get,
        object_property_get_bool, object_property_parse, object_property_set,
        object_property_set_bool, object_property_set_int,
        object_property_set_link, object_property_set_qobject,
        object_property_set_str, object_property_set_uint, object_set_props,
        object_set_propv, user_creatable_add_dict,
        user_creatable_complete, user_creatable_del
    };
    expression list args, args2;
    typedef Error;
    Error *err;
    @@
    -    fun(args, &err, args2);
    -    if (err)
    +    if (!fun(args, &err, args2))
         {
             ...
         }

Fails to convert hw/arm/armsse.c, because Coccinelle gets confused by
ARMSSE being used both as typedef and function-like macro there.
Convert manually.

Line breaks tidied up manually.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200707160613.848843-29-armbru@redhat.com>
---
 target/arm/monitor.c      |  3 +--
 target/i386/cpu.c         | 11 ++++-------
 target/s390x/cpu_models.c |  3 +--
 3 files changed, 6 insertions(+), 11 deletions(-)

(limited to 'target')

diff --git a/target/arm/monitor.c b/target/arm/monitor.c
index 087726a..c162c5f 100644
--- a/target/arm/monitor.c
+++ b/target/arm/monitor.c
@@ -184,8 +184,7 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
         i = 0;
         while ((name = cpu_model_advertised_features[i++]) != NULL) {
             if (qdict_get(qdict_in, name)) {
-                object_property_set(obj, name, visitor, &err);
-                if (err) {
+                if (!object_property_set(obj, name, visitor, &err)) {
                     break;
                 }
             }
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index dd83cb7..2b60b61 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -5271,9 +5271,8 @@ static void object_apply_props(Object *obj, QDict *props, Error **errp)
     Error *err = NULL;
 
     for (prop = qdict_first(props); prop; prop = qdict_next(props, prop)) {
-        object_property_set_qobject(obj, qdict_entry_key(prop),
-                                    qdict_entry_value(prop), &err);
-        if (err) {
+        if (!object_property_set_qobject(obj, qdict_entry_key(prop),
+                                         qdict_entry_value(prop), &err)) {
             break;
         }
     }
@@ -6340,16 +6339,14 @@ static void x86_cpu_expand_features(X86CPU *cpu, Error **errp)
 
     for (l = plus_features; l; l = l->next) {
         const char *prop = l->data;
-        object_property_set_bool(OBJECT(cpu), prop, true, &local_err);
-        if (local_err) {
+        if (!object_property_set_bool(OBJECT(cpu), prop, true, &local_err)) {
             goto out;
         }
     }
 
     for (l = minus_features; l; l = l->next) {
         const char *prop = l->data;
-        object_property_set_bool(OBJECT(cpu), prop, false, &local_err);
-        if (local_err) {
+        if (!object_property_set_bool(OBJECT(cpu), prop, false, &local_err)) {
             goto out;
         }
     }
diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c
index 8ab2061..f3ba30e 100644
--- a/target/s390x/cpu_models.c
+++ b/target/s390x/cpu_models.c
@@ -517,8 +517,7 @@ static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info,
             return;
         }
         for (e = qdict_first(qdict); e; e = qdict_next(qdict, e)) {
-            object_property_set(obj, e->key, visitor, &err);
-            if (err) {
+            if (!object_property_set(obj, e->key, visitor, &err)) {
                 break;
             }
         }
-- 
cgit v1.1