Merge remote-tracking branch 'remotes/qmp-unstable/queue/qmp' into staging

* remotes/qmp-unstable/queue/qmp: (38 commits)
  Revert "qapi: Clean up superfluous null check in qapi_dealloc_type_str()"
  qapi: Document optional arguments' backwards compatibility
  qmp: use valid JSON in transaction example
  qmp: Don't use error_is_set() to suppress additional errors
  dump: Drop pointless error_is_set(), DumpState member errp
  qemu-option: Clean up fragile use of error_is_set()
  qga: Drop superfluous error_is_set()
  qga: Clean up fragile use of error_is_set()
  qapi: Clean up fragile use of error_is_set()
  tests/qapi-schema: Drop superfluous error_is_set()
  qapi: Drop redundant, unclean error_is_set()
  hmp: Guard against misuse of hmp_handle_error()
  qga: Use return values instead of error_is_set(errp)
  error: Consistently name Error ** objects errp, and not err
  qmp: Consistently name Error ** objects errp, and not err
  qga: Consistently name Error ** objects errp, and not err
  qmp hmp: Consistently name Error * objects err, and not errp
  pci-assign: assigned_initfn(): set monitor error in common error handler
  pci-assign: propagate errors from assign_intx()
  pci-assign: propagate errors from assign_device()
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

3 files changed, 21 insertions, 18 deletions

diff --git a/qapi/opts-visitor.c b/qapi/opts-visitor.c
index 5d830a2b56..87c1c789c9 100644
--- a/qapi/opts-visitor.c
+++ b/qapi/opts-visitor.c
@@ -472,13 +472,14 @@ opts_type_size(Visitor *v, uint64_t *obj, const char *name, Error **errp)
 
     val = strtosz_suffix(opt->str ? opt->str : "", &endptr,
                          STRTOSZ_DEFSUFFIX_B);
-    if (val != -1 && *endptr == '\0') {
-        *obj = val;
-        processed(ov, name);
+    if (val < 0 || *endptr) {
+        error_set(errp, QERR_INVALID_PARAMETER_VALUE, opt->name,
+                  "a size value representible as a non-negative int64");
         return;
     }
-    error_set(errp, QERR_INVALID_PARAMETER_VALUE, opt->name,
-              "a size value representible as a non-negative int64");
+
+    *obj = val;
+    processed(ov, name);
 }
 
 
diff --git a/qapi/qapi-dealloc-visitor.c b/qapi/qapi-dealloc-visitor.c
index d0ea118fe3..dc53545fa5 100644
--- a/qapi/qapi-dealloc-visitor.c
+++ b/qapi/qapi-dealloc-visitor.c
@@ -131,7 +131,9 @@ static void qapi_dealloc_end_list(Visitor *v, Error **errp)
 static void qapi_dealloc_type_str(Visitor *v, char **obj, const char *name,
                                   Error **errp)
 {
-    g_free(*obj);
+    if (obj) {
+        g_free(*obj);
+    }
 }
 
 static void qapi_dealloc_type_int(Visitor *v, int64_t *obj, const char *name,
diff --git a/qapi/qmp-dispatch.c b/qapi/qmp-dispatch.c
index 9c614494f1..168b083c87 100644
--- a/qapi/qmp-dispatch.c
+++ b/qapi/qmp-dispatch.c
@@ -62,14 +62,14 @@ static QDict *qmp_dispatch_check_obj(const QObject *request, Error **errp)
 
 static QObject *do_qmp_dispatch(QObject *request, Error **errp)
 {
+    Error *local_err = NULL;
     const char *command;
     QDict *args, *dict;
     QmpCommand *cmd;
     QObject *ret = NULL;
 
-
     dict = qmp_dispatch_check_obj(request, errp);
-    if (!dict || error_is_set(errp)) {
+    if (!dict) {
         return NULL;
     }
 
@@ -94,13 +94,13 @@ static QObject *do_qmp_dispatch(QObject *request, Error **errp)
 
     switch (cmd->type) {
     case QCT_NORMAL:
-        cmd->fn(args, &ret, errp);
-        if (!error_is_set(errp)) {
-            if (cmd->options & QCO_NO_SUCCESS_RESP) {
-                g_assert(!ret);
-            } else if (!ret) {
-                ret = QOBJECT(qdict_new());
-            }
+        cmd->fn(args, &ret, &local_err);
+        if (local_err) {
+            error_propagate(errp, local_err);
+        } else if (cmd->options & QCO_NO_SUCCESS_RESP) {
+            g_assert(!ret);
+        } else if (!ret) {
+            ret = QOBJECT(qdict_new());
         }
         break;
     }
@@ -110,11 +110,11 @@ static QObject *do_qmp_dispatch(QObject *request, Error **errp)
     return ret;
 }
 
-QObject *qmp_build_error_object(Error *errp)
+QObject *qmp_build_error_object(Error *err)
 {
     return qobject_from_jsonf("{ 'class': %s, 'desc': %s }",
-                              ErrorClass_lookup[error_get_class(errp)],
-                              error_get_pretty(errp));
+                              ErrorClass_lookup[error_get_class(err)],
+                              error_get_pretty(err));
 }
 
 QObject *qmp_dispatch(QObject *request)