} else if (val32 & SYS_CFG_TYPE_ID) {
                bonding = rtl8xxxu_read32(priv, REG_HPON_FSM);
                bonding &= HPON_FSM_BONDING_MASK;
-               if (priv->fops->has_s0s1) {
+               if (priv->fops->tx_desc_size ==
+                   sizeof(struct rtl8xxxu_txdesc40)) {
                        if (bonding == HPON_FSM_BONDING_1T2R) {
                                sprintf(priv->chip_name, "8191EU");
                                priv->rf_paths = 2;
        /*
         * This should enable thermal meter
         */
-       if (priv->fops->has_s0s1)
+       if (priv->fops->tx_desc_size == sizeof(struct rtl8xxxu_txdesc40))
                rtl8xxxu_write_rfreg(priv,
                                     RF_A, RF6052_REG_T_METER_8723B, 0x37cf8);
        else
        .mbox_ext_reg = REG_HMBOX_EXT0_8723B,
        .mbox_ext_width = 4,
        .tx_desc_size = sizeof(struct rtl8xxxu_txdesc40),
-       .has_s0s1 = 1,
+       .has_s0s1 = 0,
        .adda_1t_init = 0x0fc01616,
        .adda_1t_path_on = 0x0fc01616,
        .adda_2t_path_on_a = 0x0fc01616,