1 files changed, 13 insertions, 19 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
index f48051c50092..3319a676c0fb 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
@@ -615,11 +615,10 @@ static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement,
 {
 	int mp_max = -64, max_idx = 0;
 	int mp_min = 63, min_idx = 0;
-	int mp_avg = 0, i, outlier_idx = 0;
+	int mp_avg = 0, i, outlier_idx = 0, mp_count = 0;
 
 	/* find min/max mismatch across all calibrated gains */
 	for (i = 0; i < nmeasurement; i++) {
-		mp_avg += mp_coeff[i];
 		if (mp_coeff[i] > mp_max) {
 			mp_max = mp_coeff[i];
 			max_idx = i;
@@ -632,10 +631,20 @@ static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement,
 	/* find average (exclude max abs value) */
 	for (i = 0; i < nmeasurement; i++) {
 		if ((abs(mp_coeff[i]) < abs(mp_max)) ||
-		    (abs(mp_coeff[i]) < abs(mp_min)))
+		    (abs(mp_coeff[i]) < abs(mp_min))) {
 			mp_avg += mp_coeff[i];
+			mp_count++;
+		}
 	}
-	mp_avg /= (nmeasurement - 1);
+
+	/*
+	 * finding mean magnitude/phase if possible, otherwise
+	 * just use the last value as the mean
+	 */
+	if (mp_count)
+		mp_avg /= mp_count;
+	else
+		mp_avg = mp_coeff[nmeasurement - 1];
 
 	/* detect outlier */
 	if (abs(mp_max - mp_min) > max_delta) {
@@ -839,20 +848,8 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah,
 			       struct ath9k_channel *chan)
 {
 	struct ath_common *common = ath9k_hw_common(ah);
-	struct ath9k_hw_capabilities *pCap = &ah->caps;
-	int val;
 	bool txiqcal_done = false;
 
-	val = REG_READ(ah, AR_ENT_OTP);
-	ath_dbg(common, ATH_DBG_CALIBRATE, "ath9k: AR_ENT_OTP 0x%x\n", val);
-
-	/* Configure rx/tx chains before running AGC/TxiQ cals */
-	if (val & AR_ENT_OTP_CHAIN2_DISABLE)
-		ar9003_hw_set_chain_masks(ah, 0x3, 0x3);
-	else
-		ar9003_hw_set_chain_masks(ah, pCap->rx_chainmask,
-					  pCap->tx_chainmask);
-
 	/* Do Tx IQ Calibration */
 	REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1,
 		      AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT,
@@ -887,9 +884,6 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah,
 	if (txiqcal_done)
 		ar9003_hw_tx_iq_cal_post_proc(ah);
 
-	/* Revert chainmasks to their original values before NF cal */
-	ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
-
 	ath9k_hw_start_nfcal(ah, true);
 
 	/* Initialize list pointers */