Hi Kien,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.14-rc7 next-20171018]
[cannot apply to staging/staging-testing]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Kien-Ha/Fix-line-too-long-warning/20171101-151946
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 4.9.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=xtensa 

All errors (new ones prefixed by >>):

   drivers/staging//rtlwifi/base.c: In function 'rtl_get_tcb_desc':
>> drivers/staging//rtlwifi/base.c:1278:6: error: implicit declaration of function 'rtl_get_vht_highest_n_rate' [-Werror=implicit-function-declaration]
         rtl_get_vht_highest_n_rate(hw, sta) :
         ^
   drivers/staging//rtlwifi/base.c: At top level:
   drivers/staging//rtlwifi/base.c:906:11: warning: '_rtl_get_vht_highest_n_rate' defined but not used [-Wunused-function]
    static u8 _rtl_get_vht_highest_n_rate(struct ieee80211_hw *hw,
              ^
   cc1: some warnings being treated as errors

vim +/rtl_get_vht_highest_n_rate +1278 drivers/staging//rtlwifi/base.c

  1225	
  1226	void rtl_get_tcb_desc(struct ieee80211_hw *hw,
  1227			      struct ieee80211_tx_info *info,
  1228			      struct ieee80211_sta *sta,
  1229			      struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc)
  1230	{
  1231	#define SET_RATE_ID(rate_id)					\
  1232		((rtlpriv->cfg->spec_ver & RTL_SPEC_NEW_RATEID) ?	\
  1233			rtl_mrate_idx_to_arfr_id(hw, rate_id,		\
  1234				(sta_entry ? sta_entry->wireless_mode :	\
  1235				 WIRELESS_MODE_G)) :			\
  1236			rate_id)
  1237	
  1238		struct rtl_priv *rtlpriv = rtl_priv(hw);
  1239		struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
  1240		struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
  1241		struct rtl_sta_info *sta_entry =
  1242			(sta ? (struct rtl_sta_info *)sta->drv_priv : NULL);
  1243	
  1244		__le16 fc = rtl_get_fc(skb);
  1245	
  1246		tcb_desc->hw_rate = _rtl_get_tx_hw_rate(hw, info);
  1247	
  1248		if (rtl_is_tx_report_skb(hw, skb))
  1249			tcb_desc->use_spe_rpt = 1;
  1250	
  1251		if (ieee80211_is_data(fc)) {
  1252			/*
  1253			 *we set data rate INX 0
  1254			 *in rtl_rc.c   if skb is special data or
  1255			 *mgt which need low data rate.
  1256			 */
  1257	
  1258			/*
  1259			 *So tcb_desc->hw_rate is just used for
  1260			 *special data and mgt frames
  1261			 */
  1262			if (info->control.rates[0].idx == 0 ||
  1263			    ieee80211_is_nullfunc(fc)) {
  1264				tcb_desc->use_driver_rate = true;
  1265				tcb_desc->ratr_index =
  1266						SET_RATE_ID(RATR_INX_WIRELESS_MC);
  1267	
  1268				tcb_desc->disable_ratefallback = 1;
  1269			} else {
  1270				/* because hw will never use hw_rate
  1271				 * when tcb_desc->use_driver_rate = false
  1272				 * so we never set highest N rate here,
  1273				 * and N rate will all be controlled by FW
  1274				 * when tcb_desc->use_driver_rate = false
  1275				 */
  1276				tcb_desc->hw_rate =
  1277					sta && sta->vht_cap.vht_supported ?
> 1278						rtl_get_vht_highest_n_rate(hw, sta) :
  1279					sta && sta->ht_cap.ht_supported ?
  1280						_rtl_get_highest_n_rate(hw, sta) :
  1281					rtlmac->mode == WIRELESS_MODE_B ?
  1282						rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M] :
  1283						rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
  1284			}
  1285	
  1286			if (is_multicast_ether_addr(hdr->addr1))
  1287				tcb_desc->multicast = 1;
  1288			else if (is_broadcast_ether_addr(hdr->addr1))
  1289				tcb_desc->broadcast = 1;
  1290	
  1291			_rtl_txrate_selectmode(hw, sta, tcb_desc);
  1292			_rtl_query_bandwidth_mode(hw, sta, tcb_desc);
  1293			_rtl_qurey_shortpreamble_mode(hw, tcb_desc, info);
  1294			_rtl_query_shortgi(hw, sta, tcb_desc, info);
  1295			_rtl_query_protection_mode(hw, tcb_desc, info);
  1296		} else {
  1297			tcb_desc->use_driver_rate = true;
  1298			tcb_desc->ratr_index = SET_RATE_ID(RATR_INX_WIRELESS_MC);
  1299			tcb_desc->disable_ratefallback = 1;
  1300			tcb_desc->mac_id = 0;
  1301			tcb_desc->packet_bw = false;
  1302		}
  1303	#undef SET_RATE_ID
  1304	}
  1305	

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