ath9k: Do a quick scan only when scan_not_start is true

Right now, it is being done for all cases.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/antenna.c

@@ -561,10 +561,16 @@ void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs)
 		antcomb->total_pkt_count++;
 		antcomb->main_total_rssi += main_rssi;
 		antcomb->alt_total_rssi  += alt_rssi;
-		if (main_ant_conf == rx_ant_conf)
+
+		if (main_ant_conf == rx_ant_conf) {
 			antcomb->main_recv_cnt++;
-		else
+			ANT_STAT_INC(ANT_MAIN, recv_cnt);
+			ANT_LNA_INC(ANT_MAIN, rx_ant_conf);
+		} else {
 			antcomb->alt_recv_cnt++;
+			ANT_STAT_INC(ANT_ALT, recv_cnt);
+			ANT_LNA_INC(ANT_ALT, rx_ant_conf);
+		}
 	}
 
 	/* Short scan check */
@@ -753,14 +759,12 @@ void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs)
 			}
 			goto div_comb_done;
 		}
+		ath_select_ant_div_from_quick_scan(antcomb, &div_ant_conf,
+						   main_rssi_avg, alt_rssi_avg,
+						   alt_ratio);
+		antcomb->quick_scan_cnt++;
 	}
 
-	ath_select_ant_div_from_quick_scan(antcomb, &div_ant_conf,
-					   main_rssi_avg, alt_rssi_avg,
-					   alt_ratio);
-
-	antcomb->quick_scan_cnt++;
-
 div_comb_done:
 	ath_ant_div_conf_fast_divbias(&div_ant_conf, antcomb, alt_ratio);
 	ath9k_hw_antdiv_comb_conf_set(sc->sc_ah, &div_ant_conf);

drivers/net/wireless/ath/ath9k/ath9k.h

@@ -609,7 +609,7 @@ struct ath_ant_comb {
 	int rssi_third;
 	bool alt_good;
 	int quick_scan_cnt;
-	int main_conf;
+	enum ath9k_ant_div_comb_lna_conf main_conf;
 	enum ath9k_ant_div_comb_lna_conf first_quick_scan_conf;
 	enum ath9k_ant_div_comb_lna_conf second_quick_scan_conf;
 	bool first_ratio;

drivers/net/wireless/ath/ath9k/debug.h

@@ -28,9 +28,13 @@ struct fft_sample_tlv;
 #ifdef CONFIG_ATH9K_DEBUGFS
 #define TX_STAT_INC(q, c) sc->debug.stats.txstats[q].c++
 #define RESET_STAT_INC(sc, type) sc->debug.stats.reset[type]++
+#define ANT_STAT_INC(i, c) sc->debug.stats.ant_stats[i].c++
+#define ANT_LNA_INC(i, c) sc->debug.stats.ant_stats[i].lna_config_cnt[c]++;
 #else
 #define TX_STAT_INC(q, c) do { } while (0)
 #define RESET_STAT_INC(sc, type) do { } while (0)
+#define ANT_STAT_INC(i, c) do { } while (0)
+#define ANT_LNA_INC(i, c) do { } while (0)
 #endif
 
 enum ath_reset_type {
@@ -243,11 +247,20 @@ struct ath_rx_stats {
 	u32 rx_spectral;
 };
 
+#define ANT_MAIN 0
+#define ANT_ALT  1
+
+struct ath_antenna_stats {
+	u32 recv_cnt;
+	u32 lna_config_cnt[4];
+};
+
 struct ath_stats {
 	struct ath_interrupt_stats istats;
 	struct ath_tx_stats txstats[ATH9K_NUM_TX_QUEUES];
 	struct ath_rx_stats rxstats;
 	struct ath_dfs_stats dfs_stats;
+	struct ath_antenna_stats ant_stats[2];
 	u32 reset[__RESET_TYPE_MAX];
 };