ib_register_event_handler
if (ib_register_event_handler(&device->event_handler))
err = ib_register_event_handler(&device->cache.event_handler);
EXPORT_SYMBOL(ib_register_event_handler);
ib_register_event_handler(&dev->event_handler);
if (ib_register_event_handler(&sa_dev->event_handler))
ib_register_event_handler(&async_file->event_handler);
result = ib_register_event_handler(&priv->event_handler);
int ib_register_event_handler (struct ib_event_handler *event_handler);