[PULL,09/13] qemu-img: Suppress unhelpful extra errors in convert, amend

diff --git a/block.c b/block.c
index ebbb515..28ea19a 100644
--- a/block.c
+++ b/block.c
@@ -5653,7 +5653,10 @@  void bdrv_img_create(const char *filename, const char *fmt,
 
     /* Parse -o options */
     if (options) {
-        if (qemu_opts_do_parse(opts, options, NULL) != 0) {
+        qemu_opts_do_parse(opts, options, NULL, &local_err);
+        if (local_err) {
+            error_report_err(local_err);
+            local_err = NULL;
             error_setg(errp, "Invalid options for file format '%s'", fmt);
             goto out;
         }
diff --git a/include/qemu/option.h b/include/qemu/option.h
index a41ee92..f88b545 100644
--- a/include/qemu/option.h
+++ b/include/qemu/option.h
@@ -115,7 +115,8 @@  const char *qemu_opts_id(QemuOpts *opts);
 void qemu_opts_set_id(QemuOpts *opts, char *id);
 void qemu_opts_del(QemuOpts *opts);
 void qemu_opts_validate(QemuOpts *opts, const QemuOptDesc *desc, Error **errp);
-int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname);
+void qemu_opts_do_parse(QemuOpts *opts, const char *params,
+                        const char *firstname, Error **errp);
 QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, int permit_abbrev);
 void qemu_opts_set_defaults(QemuOptsList *list, const char *params,
                             int permit_abbrev);
diff --git a/qemu-char.c b/qemu-char.c
index 3ed46ee..a405d76 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -3379,8 +3379,11 @@  QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
         qemu_opt_set(opts, "host", host, &error_abort);
         qemu_opt_set(opts, "port", port, &error_abort);
         if (p[pos] == ',') {
-            if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
+            qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
+            if (local_err) {
+                error_report_err(local_err);
                 goto fail;
+            }
         }
         if (strstart(filename, "telnet:", &p))
             qemu_opt_set(opts, "telnet", "on", &error_abort);
@@ -3411,8 +3414,11 @@  QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
     }
     if (strstart(filename, "unix:", &p)) {
         qemu_opt_set(opts, "backend", "socket", &error_abort);
-        if (qemu_opts_do_parse(opts, p, "path") != 0)
+        qemu_opts_do_parse(opts, p, "path", &local_err);
+        if (local_err) {
+            error_report_err(local_err);
             goto fail;
+        }
         return opts;
     }
     if (strstart(filename, "/dev/parport", NULL) ||
diff --git a/qemu-img.c b/qemu-img.c
index 54e34bd..7ac7f56 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -1550,10 +1550,14 @@  static int img_convert(int argc, char **argv)
         create_opts = qemu_opts_append(create_opts, proto_drv->create_opts);
 
         opts = qemu_opts_create(create_opts, NULL, 0, &error_abort);
-        if (options && qemu_opts_do_parse(opts, options, NULL)) {
-            error_report("Invalid options for file format '%s'", out_fmt);
-            ret = -1;
-            goto out;
+        if (options) {
+            qemu_opts_do_parse(opts, options, NULL, &local_err);
+            if (local_err) {
+                error_report("Invalid options for file format '%s'", out_fmt);
+                error_free(local_err);
+                ret = -1;
+                goto out;
+            }
         }
 
         qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512,
@@ -2887,6 +2891,7 @@  static void amend_status_cb(BlockDriverState *bs,
 
 static int img_amend(int argc, char **argv)
 {
+    Error *err = NULL;
     int c, ret = 0;
     char *options = NULL;
     QemuOptsList *create_opts = NULL;
@@ -2992,10 +2997,14 @@  static int img_amend(int argc, char **argv)
 
     create_opts = qemu_opts_append(create_opts, bs->drv->create_opts);
     opts = qemu_opts_create(create_opts, NULL, 0, &error_abort);
-    if (options && qemu_opts_do_parse(opts, options, NULL)) {
-        error_report("Invalid options for file format '%s'", fmt);
-        ret = -1;
-        goto out;
+    if (options) {
+        qemu_opts_do_parse(opts, options, NULL, &err);
+        if (err) {
+            error_report("Invalid options for file format '%s'", fmt);
+            error_free(err);
+            ret = -1;
+            goto out;
+        }
     }
 
     /* In case the driver does not call amend_status_cb() */
diff --git a/util/qemu-option.c b/util/qemu-option.c
index 95f242e..fda4e5f 100644
--- a/util/qemu-option.c
+++ b/util/qemu-option.c
@@ -799,17 +799,16 @@  static void opts_do_parse(QemuOpts *opts, const char *params,
     }
 }
 
-int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname)
+/**
+ * Store options parsed from @params into @opts.
+ * If @firstname is non-null, the first key=value in @params may omit
+ * key=, and is treated as if key was @firstname.
+ * On error, store an error object through @errp if non-null.
+ */
+void qemu_opts_do_parse(QemuOpts *opts, const char *params,
+                       const char *firstname, Error **errp)
 {
-    Error *err = NULL;
-
-    opts_do_parse(opts, params, firstname, false, &err);
-    if (err) {
-        qerror_report_err(err);
-        error_free(err);
-        return -1;
-    }
-    return 0;
+    opts_do_parse(opts, params, firstname, false, errp);
 }
 
 static QemuOpts *opts_parse(QemuOptsList *list, const char *params,