Use the SCLP_EVENT() QOM type-checking macro to avoid DO_UPCAST().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
---
 hw/s390x/event-facility.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/hw/s390x/event-facility.c b/hw/s390x/event-facility.c
index faa51aa4c7..6891e3cd73 100644
--- a/hw/s390x/event-facility.c
+++ b/hw/s390x/event-facility.c
@@ -64,8 +64,7 @@ static bool event_pending(SCLPEventFacility *ef)
     SCLPEventClass *event_class;
 
     QTAILQ_FOREACH(kid, &ef->sbus.qbus.children, sibling) {
-        DeviceState *qdev = kid->child;
-        event = DO_UPCAST(SCLPEvent, qdev, qdev);
+        event = SCLP_EVENT(kid->child);
         event_class = SCLP_EVENT_GET_CLASS(event);
         if (event->event_pending &&
             event_class->get_send_mask() & ef->receive_mask) {
-- 
2.38.1