qapi: Drop qapi_event_send_FOO()'s Error ** argument

The generated qapi_event_send_FOO() take an Error ** argument.  They
can't actually fail, because all they do with the argument is passing it
to functions that can't fail: the QObject output visitor, and the
@qmp_emit callback, which is either monitor_qapi_event_queue() or
event_test_emit().

Drop the argument, and pass &error_abort to the QObject output visitor
and @qmp_emit instead.

Suggested-by: Eric Blake <eblake@redhat.com>
Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180815133747.25032-4-peterx@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Commit message rewritten, update to qapi-code-gen.txt corrected]
Signed-off-by: Markus Armbruster <armbru@redhat.com>

1 files changed, 7 insertions, 9 deletions

diff --git a/vl.c b/vl.c
index 5ba06ad..10dd690 100644
--- a/vl.c
+++ b/vl.c
@@ -1647,8 +1647,7 @@ void qemu_system_reset(ShutdownCause reason)
         qemu_devices_reset();
     }
     if (reason != SHUTDOWN_CAUSE_SUBSYSTEM_RESET) {
-        qapi_event_send_reset(shutdown_caused_by_guest(reason),
-                              &error_abort);
+        qapi_event_send_reset(shutdown_caused_by_guest(reason));
     }
     cpu_synchronize_all_post_reset();
 }
@@ -1661,11 +1660,11 @@ void qemu_system_guest_panicked(GuestPanicInformation *info)
         current_cpu->crash_occurred = true;
     }
     qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE,
-                                   !!info, info, &error_abort);
+                                   !!info, info);
     vm_stop(RUN_STATE_GUEST_PANICKED);
     if (!no_shutdown) {
         qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_POWEROFF,
-                                       !!info, info, &error_abort);
+                                       !!info, info);
         qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_PANIC);
     }
 
@@ -1706,7 +1705,7 @@ static void qemu_system_suspend(void)
     pause_all_vcpus();
     notifier_list_notify(&suspend_notifiers, NULL);
     runstate_set(RUN_STATE_SUSPENDED);
-    qapi_event_send_suspend(&error_abort);
+    qapi_event_send_suspend();
 }
 
 void qemu_system_suspend_request(void)
@@ -1776,7 +1775,7 @@ void qemu_system_shutdown_request(ShutdownCause reason)
 
 static void qemu_system_powerdown(void)
 {
-    qapi_event_send_powerdown(&error_abort);
+    qapi_event_send_powerdown();
     notifier_list_notify(&powerdown_notifiers, NULL);
 }
 
@@ -1819,8 +1818,7 @@ static bool main_loop_should_exit(void)
     request = qemu_shutdown_requested();
     if (request) {
         qemu_kill_report();
-        qapi_event_send_shutdown(shutdown_caused_by_guest(request),
-                                 &error_abort);
+        qapi_event_send_shutdown(shutdown_caused_by_guest(request));
         if (no_shutdown) {
             vm_stop(RUN_STATE_SHUTDOWN);
         } else {
@@ -1843,7 +1841,7 @@ static bool main_loop_should_exit(void)
         notifier_list_notify(&wakeup_notifiers, &wakeup_reason);
         wakeup_reason = QEMU_WAKEUP_REASON_NONE;
         resume_all_vcpus();
-        qapi_event_send_wakeup(&error_abort);
+        qapi_event_send_wakeup();
     }
     if (qemu_powerdown_requested()) {
         qemu_system_powerdown();