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Commit 91ae4d02 authored by Rajkumar Manoharan's avatar Rajkumar Manoharan Committed by John W. Linville
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ath9k_hw: Fix radio retention for AR9462 



IQ calibration during fast channel change sometimes failed
with RTT. And also restoring invalid radio retention readings
during init cal could cause failure to set the channel properly.
This patch counts the valid rtt history readings and clears
rtt mask.

Signed-off-by: default avatarRajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 52d6d4ef

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

+6 −2
Original line number Diff line number Diff line
@@ -908,12 +908,15 @@ static bool ar9003_hw_rtt_restore(struct ath_hw *ah, struct ath9k_channel *chan) 
	int i;

	bool restore;



	if (!(ah->caps.hw_caps & ATH9K_HW_CAP_RTT) || !ah->caldata)

	if (!ah->caldata)

		return false;



	hist = &ah->caldata->rtt_hist;

	if (!hist->num_readings)

		return false;



	ar9003_hw_rtt_enable(ah);

	ar9003_hw_rtt_set_mask(ah, 0x10);

	ar9003_hw_rtt_set_mask(ah, 0x00);

	for (i = 0; i < AR9300_MAX_CHAINS; i++) {

		if (!(ah->rxchainmask & (1 << i)))

			continue;
@@ -1070,6 +1073,7 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah, 
		if (is_reusable && (hist->num_readings < RTT_HIST_MAX)) {

			u32 *table;



			hist->num_readings++;

			for (i = 0; i < AR9300_MAX_CHAINS; i++) {

				if (!(ah->rxchainmask & (1 << i)))

					continue;