[PATCH 2/3] s390x/event-facility: Simplify sclp_get_event_facility_bus()

[Cédric Le Goater]

sclp_get_event_facility_bus() scans the whole machine to find a
TYPE_SCLP_EVENTS_BUS object. The SCLPDevice instance is now available
under the machine state, use it to simplify the lookup and adjust the
creation of the consoles.

Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
 include/hw/s390x/event-facility.h |  2 +-
 hw/s390x/event-facility.c         | 13 ++-----------
 hw/s390x/s390-virtio-ccw.c        | 12 +++++++-----
 3 files changed, 10 insertions(+), 17 deletions(-)

diff --git a/include/hw/s390x/event-facility.h 
b/include/hw/s390x/event-facility.h
index 
3ffd575d8ff09863e17f96d1bdb56a2ca6c2aa56..ff874e792d32ffa4089bb4cb40ab9eb34c889b0c
 100644
--- a/include/hw/s390x/event-facility.h
+++ b/include/hw/s390x/event-facility.h
@@ -203,6 +203,6 @@ struct SCLPEventFacilityClass {
     bool (*event_pending)(SCLPEventFacility *ef);
 };
 
-BusState *sclp_get_event_facility_bus(void);
+BusState *sclp_get_event_facility_bus(SCLPEventFacility *ef);
 
 #endif
diff --git a/hw/s390x/event-facility.c b/hw/s390x/event-facility.c
index 
f9829de9532b65466a65443cecd9609198c5c026..06c1da0ecedcb307c77672097323954c6e7ccaf2
 100644
--- a/hw/s390x/event-facility.c
+++ b/hw/s390x/event-facility.c
@@ -523,16 +523,7 @@ static void register_types(void)
 
 type_init(register_types)
 
-BusState *sclp_get_event_facility_bus(void)
+BusState *sclp_get_event_facility_bus(SCLPEventFacility *ef)
 {
-    Object *busobj;
-    SCLPEventsBus *sbus;
-
-    busobj = object_resolve_path_type("", TYPE_SCLP_EVENTS_BUS, NULL);
-    sbus = OBJECT_CHECK(SCLPEventsBus, busobj, TYPE_SCLP_EVENTS_BUS);
-    if (!sbus) {
-        return NULL;
-    }
-
-    return &sbus->qbus;
+    return BUS(&ef->sbus);
 }
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 
159f67d05c1e534800427ce46afcdaa526fd5902..2afaf45ce606b2bf7e67dc890339f6c5dd917eca
 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -237,13 +237,15 @@ static void s390_create_virtio_net(BusState *bus, const 
char *name)
     }
 }
 
-static void s390_create_sclpconsole(const char *type, Chardev *chardev)
+static void s390_create_sclpconsole(SCLPDevice *sclp,
+                                    const char *type, Chardev *chardev)
 {
-    BusState *ev_fac_bus = sclp_get_event_facility_bus();
+    SCLPEventFacility *ef = sclp->event_facility;
+    BusState *ev_fac_bus = sclp_get_event_facility_bus(ef);
     DeviceState *dev;
 
     dev = qdev_new(type);
-    object_property_add_child(OBJECT(ev_fac_bus->parent), type, OBJECT(dev));
+    object_property_add_child(OBJECT(ef), type, OBJECT(dev));
     qdev_prop_set_chr(dev, "chardev", chardev);
     qdev_realize_and_unref(dev, ev_fac_bus, &error_fatal);
 }
@@ -308,10 +310,10 @@ static void ccw_init(MachineState *machine)
 
     /* init consoles */
     if (serial_hd(0)) {
-        s390_create_sclpconsole("sclpconsole", serial_hd(0));
+        s390_create_sclpconsole(ms->sclp, "sclpconsole", serial_hd(0));
     }
     if (serial_hd(1)) {
-        s390_create_sclpconsole("sclplmconsole", serial_hd(1));
+        s390_create_sclpconsole(ms->sclp, "sclplmconsole", serial_hd(1));
     }
 
     /* init the TOD clock */
-- 
2.44.0