chardev: do not use machine_init_done

machine_init_done is not the right flag to check when preconfig
is taken into account; for example "./qemu-system-x86_64 -serial
mon:stdio -preconfig" does not print the QEMU monitor header until after
exit_preconfig.  Add back a custom bool for mux character devices.  This
partially undoes commit c7278b4355 ("chardev: introduce chr_machine_done
hook", 2018-03-12), but it keeps the cleaner logic using a function
pointer in ChardevClass.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/include/chardev/char.h b/include/chardev/char.h
index db42f0a8c6..4181a2784a 100644
--- a/include/chardev/char.h
+++ b/include/chardev/char.h
@@ -270,8 +270,7 @@ struct ChardevClass {
     void (*chr_set_echo)(Chardev *chr, bool echo);
     void (*chr_set_fe_open)(Chardev *chr, int fe_open);
     void (*chr_be_event)(Chardev *s, QEMUChrEvent event);
-    /* Return 0 if succeeded, 1 if failed */
-    int (*chr_machine_done)(Chardev *chr);
+    void (*chr_options_parsed)(Chardev *chr);
 };
 
 Chardev *qemu_chardev_new(const char *id, const char *typename,
@@ -283,6 +282,9 @@ extern int term_escape_char;
 GSource *qemu_chr_timeout_add_ms(Chardev *chr, guint ms,
                                  GSourceFunc func, void *private);
 
+void suspend_mux_open(void);
+void resume_mux_open(void);
+
 /* console.c */
 void qemu_chr_parse_vc(QemuOpts *opts, ChardevBackend *backend, Error **errp);