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, 2 insertions, 2 deletions

diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
index d2e6b9f5c7..979469dc3c 100644
--- a/target/s390x/cpu.c
+++ b/target/s390x/cpu.c
@@ -464,8 +464,8 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data)
     CPUClass *cc = CPU_CLASS(scc);
     DeviceClass *dc = DEVICE_CLASS(oc);
 
-    scc->parent_realize = dc->realize;
-    dc->realize = s390_cpu_realizefn;
+    device_class_set_parent_realize(dc, s390_cpu_realizefn,
+                                    &scc->parent_realize);
     dc->props = s390x_cpu_properties;
     dc->user_creatable = true;