From: Rajkumar Manoharan Date: Thu, 15 Sep 2011 13:32:25 +0000 (+0530) Subject: ath9k_hw: Fix magnitude/phase coeff correction X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=e9c10469cf3c71bc1c6b0f01319161e277d6ac9b;p=openwrt%2Fstaging%2Fblogic.git 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 --- 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,