From 9369746050e838c57e357f0caa552386ad65a82d Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 30 Jul 2010 21:02:10 +0200 Subject: [PATCH] ath9k_hw: fix periodic noise floor calibration on AR9003 The periodic noise floor calibration is broken on this chip family, because it keeps triggering a software-filtered noise floor calibration, but never reads the result before uploading the history buffer value to the hardware. Fix this with a call to ath9k_hw_getnf(), just like on AR9002. Signed-off-by: Felix Fietkau Acked-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ar9003_calib.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c index 938365eebae6..f51ab89c989d 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c @@ -148,6 +148,12 @@ static bool ar9003_hw_calibrate(struct ath_hw *ah, /* Do NF cal only at longer intervals */ if (longcal) { + /* + * Get the value from the previous NF cal and update + * history buffer. + */ + ath9k_hw_getnf(ah, chan); + /* * Load the NF from history buffer of the current channel. * NF is slow time-variant, so it is OK to use a historical -- 2.20.1