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authorRajkumar Manoharan <rmanohar@qca.qualcomm.com>2011-09-15 19:02:25 +0530
committerJohn W. Linville <linville@tuxdriver.com>2011-09-19 15:58:25 -0400
commite9c10469cf3c71bc1c6b0f01319161e277d6ac9b (patch)
tree1ce8688210d2bc7c6e62b17e0ac40fc9c8066e91 /drivers/net/wireless/ath
parent491b209d06192a8b93d226b4e5d7399747bf01ef (diff)
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 <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath')
-rw-r--r--drivers/net/wireless/ath/ath9k/ar9003_calib.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
index 3319a676c0f..695d9d38d48 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,