From e9c10469cf3c71bc1c6b0f01319161e277d6ac9b Mon Sep 17 00:00:00 2001 From: Rajkumar Manoharan Date: Thu, 15 Sep 2011 19:02:25 +0530 Subject: [PATCH] ath9k_hw: Fix magnitude/phase coeff correction Do the magnitude/phase coeff correction only if the outlier is detected. Updating wrong magnitude/phase coeff factor impacts not only tx gain setting but also leads to poor performance in congested networks. In the clear environment the impact is very minimal because the outlier happens very rarely according to the past experiment. It occured less than once every 1000 calibrations. Cc: stable@kernel.org Signed-off-by: Rajkumar Manoharan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ar9003_calib.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c index 3319a676c0fb..695d9d38d482 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c @@ -652,8 +652,9 @@ static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement, outlier_idx = max_idx; else outlier_idx = min_idx; + + mp_coeff[outlier_idx] = mp_avg; } - mp_coeff[outlier_idx] = mp_avg; } static void ar9003_hw_tx_iqcal_load_avg_2_passes(struct ath_hw *ah,