Commit 54717e53 authored Jul 01, 2012 by Rajkumar Manoharan Committed by John W. Linville Jul 09, 2012

ath9k_hw: do not load noise floor readings when it is running



Noise floor calibration is performed on longcal interval and
the reading will be updated in history buffer. On rare occasions,
the previous noisefloor calibration might not be completed within
the period and trying to load nf reading will be failed. In such
situation, postpone the nf cabliration to next cycle to give
enough time to complete the calibration. This was already taken
care for ar9002 chips.

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent 1fe860ed

drivers/net/wireless/ath/ath9k/ar9003_calib.c

+5 −8

Original line number	Diff line number	Diff line
		@@ -159,14 +159,11 @@ 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.
		* Do NF cal only at longer intervals. Get the value from
		* the previous NF cal and update history buffer.
		*/
		ath9k_hw_getnf(ah, chan);

		if (longcal && 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