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char: Use error_printf() to print help and such

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Calling error_report() in a function that takes an Error ** argument
is suspicious.  Convert a few that are actually help and such to
error_printf().

Improves output of -chardev help from

    qemu-system-x86_64: -chardev help: Available chardev backend types:
    serial
    ...

to

    Available chardev backend types:
    serial
    ...

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20181017082702.5581-8-armbru@redhat.com>
This commit is contained in:
Markus Armbruster
2018-10-17 10:26:31 +02:00
parent c3b8e3e0ed
commit b1b769b0f3
2 changed files with 2 additions and 2 deletions
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2
chardev/char.c
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@@ -634,7 +634,7 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts, Error **errp)
chardev_name_foreach(help_string_append, str);
error_report("Available chardev backend types: %s", str->str);
error_printf("Available chardev backend types: %s\n", str->str);
g_string_free(str, true);
return NULL;
}