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ath9k_hw: fix periodic noise floor calibration on AR9003

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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 <nbd@openwrt.org>
Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2010-07-30 21:02:10 +02:00 committed by John W. Linville
parent 00c86590e3
commit 9369746050
1 changed files with 6 additions and 0 deletions
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6
drivers/net/wireless/ath/ath9k/ar9003_calib.c
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@ -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