[PATCH v3 5/6] hw/misc/mos6522: move timer_new from init() into realize() to avoid memleaks

[Pan Nengyuan]

There are some memleaks when we call 'device_list_properties'. This patch move 
timer_new from init into realize to fix it.
Meanwhile, add calls to mos6522_realize() in mac_via_realize to make this move 
to be valid.

Reported-by: Euler Robot <euler.ro...@huawei.com>
Signed-off-by: Pan Nengyuan <pannengy...@huawei.com>
---
Cc: Laurent Vivier <laur...@vivier.eu>
---
v2->v1:
- no changes in this patch.
v3->v2:
- remove null check in reset, and add calls to mos6522_realize() in 
mac_via_realize to make this move to be valid.
---
 hw/misc/mac_via.c | 5 +++++
 hw/misc/mos6522.c | 6 ++++++
 2 files changed, 11 insertions(+)

diff --git a/hw/misc/mac_via.c b/hw/misc/mac_via.c
index b7d0012794..1d72d4ef35 100644
--- a/hw/misc/mac_via.c
+++ b/hw/misc/mac_via.c
@@ -879,6 +879,11 @@ static void mac_via_realize(DeviceState *dev, Error **errp)
     sysbus_init_child_obj(OBJECT(dev), "via2", &m->mos6522_via2,
                           sizeof(m->mos6522_via2), TYPE_MOS6522_Q800_VIA2);
 
+    object_property_set_bool(OBJECT(&m->mos6522_via1), true, "realized",
+                             &error_abort);
+    object_property_set_bool(OBJECT(&m->mos6522_via2), true, "realized",
+                             &error_abort);
+
     /* Pass through mos6522 output IRQs */
     ms = MOS6522(&m->mos6522_via1);
     object_property_add_alias(OBJECT(dev), "irq[0]", OBJECT(ms),
diff --git a/hw/misc/mos6522.c b/hw/misc/mos6522.c
index 19e154b870..c1cd154a84 100644
--- a/hw/misc/mos6522.c
+++ b/hw/misc/mos6522.c
@@ -485,6 +485,11 @@ static void mos6522_init(Object *obj)
     for (i = 0; i < ARRAY_SIZE(s->timers); i++) {
         s->timers[i].index = i;
     }
+}
+
+static void mos6522_realize(DeviceState *dev, Error **errp)
+{
+    MOS6522State *s = MOS6522(dev);
 
     s->timers[0].timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, mos6522_timer1, s);
     s->timers[1].timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, mos6522_timer2, s);
@@ -502,6 +507,7 @@ static void mos6522_class_init(ObjectClass *oc, void *data)
 
     dc->reset = mos6522_reset;
     dc->vmsd = &vmstate_mos6522;
+    dc->realize = mos6522_realize;
     device_class_set_props(dc, mos6522_properties);
     mdc->parent_reset = dc->reset;
     mdc->set_sr_int = mos6522_set_sr_int;
-- 
2.18.2