qdev: use device_class_set_parent_realize/unrealize/reset()

changes generated using the following Coccinelle patch:

  @@
  type DeviceParentClass;
  DeviceParentClass *pc;
  DeviceClass *dc;
  identifier parent_fn;
  identifier child_fn;
  @@
  (
  +device_class_set_parent_realize(dc, child_fn, &pc->parent_fn);
  -pc->parent_fn = dc->realize;
  ...
  -dc->realize = child_fn;
  |
  +device_class_set_parent_unrealize(dc, child_fn, &pc->parent_fn);
  -pc->parent_fn = dc->unrealize;
  ...
  -dc->unrealize = child_fn;
  |
  +device_class_set_parent_reset(dc, child_fn, &pc->parent_fn);
  -pc->parent_fn = dc->reset;
  ...
  -dc->reset = child_fn;
  )

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180114020412.26160-4-f4bug@amsat.org>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/hw/timer/i8254.c b/hw/timer/i8254.c
index dbc4a0baec..1057850808 100644
--- a/hw/timer/i8254.c
+++ b/hw/timer/i8254.c
@@ -358,8 +358,7 @@ static void pit_class_initfn(ObjectClass *klass, void *data)
     PITCommonClass *k = PIT_COMMON_CLASS(klass);
     DeviceClass *dc = DEVICE_CLASS(klass);
 
-    pc->parent_realize = dc->realize;
-    dc->realize = pit_realizefn;
+    device_class_set_parent_realize(dc, pit_realizefn, &pc->parent_realize);
     k->set_channel_gate = pit_set_channel_gate;
     k->get_channel_info = pit_get_channel_info_common;
     k->post_load = pit_post_load;