return 0;
 }
 
+static void rtl8180_bss_info_changed(struct ieee80211_hw *dev,
+                                    struct ieee80211_vif *vif,
+                                    struct ieee80211_bss_conf *info,
+                                    u32 changed)
+{
+       struct rtl8180_priv *priv = dev->priv;
+
+       if (changed & BSS_CHANGED_ERP_SLOT && priv->rf->conf_erp)
+               priv->rf->conf_erp(dev, info);
+}
+
 static void rtl8180_configure_filter(struct ieee80211_hw *dev,
                                     unsigned int changed_flags,
                                     unsigned int *total_flags,
        .remove_interface       = rtl8180_remove_interface,
        .config                 = rtl8180_config,
        .config_interface       = rtl8180_config_interface,
+       .bss_info_changed       = rtl8180_bss_info_changed,
        .configure_filter       = rtl8180_configure_filter,
 };
 
 
 
        rtl8225_write(dev, 0x7, rtl8225_chan[chan - 1]);
        msleep(10);
+}
+
+static void rtl8225_rf_conf_erp(struct ieee80211_hw *dev,
+                               struct ieee80211_bss_conf *info)
+{
+       struct rtl8180_priv *priv = dev->priv;
 
-       if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
+       if (info->use_short_slot) {
                rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
                rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
                rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
        .name           = "rtl8225",
        .init           = rtl8225_rf_init,
        .stop           = rtl8225_rf_stop,
-       .set_chan       = rtl8225_rf_set_channel
+       .set_chan       = rtl8225_rf_set_channel,
+       .conf_erp       = rtl8225_rf_conf_erp,
 };
 
 static const struct rtl818x_rf_ops rtl8225z2_ops = {
        .name           = "rtl8225z2",
        .init           = rtl8225z2_rf_init,
        .stop           = rtl8225_rf_stop,
-       .set_chan       = rtl8225_rf_set_channel
+       .set_chan       = rtl8225_rf_set_channel,
+       .conf_erp       = rtl8225_rf_conf_erp,
 };
 
 const struct rtl818x_rf_ops * rtl8180_detect_rf(struct ieee80211_hw *dev)
 
        void (*init)(struct ieee80211_hw *);
        void (*stop)(struct ieee80211_hw *);
        void (*set_chan)(struct ieee80211_hw *, struct ieee80211_conf *);
+       void (*conf_erp)(struct ieee80211_hw *, struct ieee80211_bss_conf *);
 };
 
 /* Tx/Rx flags are common between RTL818X chips */