char: add backend hotswap handler

Frontends should have an interface to setup the handler of a backend change.
The interface will be used in the next commits

Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1499342940-56739-3-git-send-email-anton.nefedov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/monitor.c b/monitor.c
index 12935a7d71..534f4e3079 100644
--- a/monitor.c
+++ b/monitor.c
@@ -4110,12 +4110,12 @@ void monitor_init(Chardev *chr, int flags)
 
     if (monitor_is_qmp(mon)) {
         qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_qmp_read,
-                                 monitor_qmp_event, mon, NULL, true);
+                                 monitor_qmp_event, NULL, mon, NULL, true);
         qemu_chr_fe_set_echo(&mon->chr, true);
         json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
     } else {
         qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_read,
-                                 monitor_event, mon, NULL, true);
+                                 monitor_event, NULL, mon, NULL, true);
     }
 
     qemu_mutex_lock(&monitor_lock);