spapr_events: Rewrite a fall through comment

GCC9 is confused by this comment when building with CFLAG
-Wimplicit-fallthrough=2:

    CC      ppc64-softmmu/hw/ppc/spapr_rtc.o
  hw/ppc/spapr_events.c: In function ‘rtas_event_log_to_source’:
  hw/ppc/spapr_events.c:312:12: error: this statement may fall through [-Werror=implicit-fallthrough=]
    312 |         if (spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)) {
        |            ^
  hw/ppc/spapr_events.c:317:5: note: here
    317 |     case RTAS_LOG_TYPE_EPOW:
        |     ^~~~
  cc1: all warnings being treated as errors

Rewrite the comment using 'fall through' which is recognized by
GCC and static analyzers.

Reported-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20190719131425.10835-8-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

diff --git a/hw/ppc/spapr_events.c b/hw/ppc/spapr_events.c
index 163a6cd25b453986948a00995c2a9cab73220b3d..0e4c19523aea8163e0d3e636427d41dfd913d79f 100644 (file)
--- a/hw/ppc/spapr_events.c
+++ b/hw/ppc/spapr_events.c
@@ -314,7 +314,7 @@ rtas_event_log_to_source(SpaprMachineState *spapr, int log_type)
             g_assert(source->enabled);
             break;
         }
-        /* fall back to epow for legacy hotplug interrupt source */
+        /* fall through back to epow for legacy hotplug interrupt source */
     case RTAS_LOG_TYPE_EPOW:
         source = spapr_event_sources_get_source(spapr->event_sources,
                                                 EVENT_CLASS_EPOW);