From: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Date: Tue, 25 Oct 2011 11:17:36 +0000 (+0530)
Subject: ath9k_hw: Fix noise floor calibration timeout on fast channel change
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=93348928f2c980718434b1bc42f9d7638d665db4;p=linux-beck.git

ath9k_hw: Fix noise floor calibration timeout on fast channel change

During the fast channel change noise floor values are being loaded
twice at init_cal and after channel_change. The commit "ath9k_hw:
Improve fast channel change for AR9003 chips" overlooked it that
caused failure to load nf while doing bgscan. This patch performs noise
floor calibration after the fast and full reset.

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

diff --git a/drivers/net/wireless/ath/ath9k/ar9002_calib.c b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
index e0ab0657cc3a..88279e325dca 100644
--- a/drivers/net/wireless/ath/ath9k/ar9002_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
@@ -868,10 +868,6 @@ static bool ar9002_hw_init_cal(struct ath_hw *ah, struct ath9k_channel *chan)
 	/* Do PA Calibration */
 	ar9002_hw_pa_cal(ah, true);
 
-	/* Do NF Calibration after DC offset and other calibrations */
-	ath9k_hw_loadnf(ah, chan);
-	ath9k_hw_start_nfcal(ah, true);
-
 	if (ah->caldata)
 		ah->caldata->nfcal_pending = true;
 
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
index a4cd1617092b..12a730dcb500 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
@@ -1085,9 +1085,6 @@ skip_tx_iqcal:
 		ar9003_hw_rtt_disable(ah);
 	}
 
-	ath9k_hw_loadnf(ah, chan);
-	ath9k_hw_start_nfcal(ah, true);
-
 	/* Initialize list pointers */
 	ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
 	ah->supp_cals = IQ_MISMATCH_CAL;
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index f16d2033081f..b479160dc262 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1724,6 +1724,9 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
 	if (!ath9k_hw_init_cal(ah, chan))
 		return -EIO;
 
+	ath9k_hw_loadnf(ah, chan);
+	ath9k_hw_start_nfcal(ah, true);
+
 	ENABLE_REGWRITE_BUFFER(ah);
 
 	ath9k_hw_restore_chainmask(ah);