static int ieee80211_change_mac(struct net_device *dev, void *addr)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct sockaddr *sa = addr;
	int ret;

	if (ieee80211_sdata_running(sdata))
		return -EBUSY;

	ret = eth_mac_addr(dev, sa);

	if (ret == 0)
		memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN);

	return ret;
}
static int ieee80211_change_mac(struct net_device *dev, void *addr)
{
	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
	struct sockaddr *sa = addr;
	int ret;

	if (ieee80211_sdata_running(sdata))
		return -EBUSY;

	ret = eth_mac_addr(dev, sa);

	if (ret == 0)
		memcpy(sdata->vif.addr, sa->sa_data, ETH_ALEN);

	return ret;
}