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Message-Id: <20110928220136.931844821@clark.kroah.org>
Date:	Wed, 28 Sep 2011 15:01:14 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Felix Fietkau <nbd@...nwrt.org>,
	"John W. Linville" <linville@...driver.com>
Subject: [110/244] ath9k_hw: fix calibration on 5 ghz

3.0-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Felix Fietkau <nbd@...nwrt.org>

commit 0e4660cbe51276e86dbdab17228733dbcdb49249 upstream.

ADC calibrations cannot run on 5 GHz with fast clock enabled. They
need to be disabled, otherwise they'll hang and IQ mismatch calibration
will not be run either.

Signed-off-by: Felix Fietkau <nbd@...nwrt.org>
Reported-by: Adrian Chadd <adrian@...ebsd.org>
Signed-off-by: John W. Linville <linville@...driver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/net/wireless/ath/ath9k/ar9002_calib.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/net/wireless/ath/ath9k/ar9002_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
@@ -41,7 +41,8 @@ static bool ar9002_hw_is_cal_supported(s
 	case ADC_DC_CAL:
 		/* Run ADC Gain Cal for non-CCK & non 2GHz-HT20 only */
 		if (!IS_CHAN_B(chan) &&
-		    !(IS_CHAN_2GHZ(chan) && IS_CHAN_HT20(chan)))
+		    !((IS_CHAN_2GHZ(chan) || IS_CHAN_A_FAST_CLOCK(ah, chan)) &&
+		      IS_CHAN_HT20(chan)))
 			supported = true;
 		break;
 	}


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