wait_func
ppd.wait_func = bcmgenet_mii_wait;
err = wait_func(dev, ent);
ret = priv->wait_func(priv->wait_func_data);
ret = priv->wait_func(priv->wait_func_data);
priv->wait_func = pdata->wait_func;
priv->wait_func = unimac_mdio_poll;
int (*wait_func) (void *wait_func_data);
ceph_mds_request_wait_callback_t wait_func)
if (wait_func) {
err = wait_func(mdsc, req);
ceph_mds_request_wait_callback_t wait_func);
int (*wait_func)(void *data);