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char: Make -chardev help print to stdout 

Command line help explicitly requested by the user should be printed
to stdout, not stderr.  We do elsewhere.  Adjust -chardev to match:
use qemu_printf() instead of error_printf().  Plain printf() would be
wrong because we need to print to the current monitor for "chardev-add
help".

Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190417190641.26814-14-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2019-04-17 21:06:39 +02:00
parent cdcd436120
commit ef2fd6f1d1
1 changed files with 2 additions and 1 deletions
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3
chardev/char.c
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@ -28,6 +28,7 @@
#include "sysemu/sysemu.h"
#include "qemu/config-file.h"
#include "qemu/error-report.h"
#include "qemu/qemu-print.h"
#include "chardev/char.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-char.h"
@ -651,7 +652,7 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts, GMainContext *context,
chardev_name_foreach(help_string_append, str);
error_printf("Available chardev backend types: %s\n", str->str);
qemu_printf("Available chardev backend types: %s\n", str->str);
g_string_free(str, true);
return NULL;
}