linux-kernel - [014/116] ath5k: dont use external sleep clock in AP mode

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Date:	Tue, 30 Mar 2010 15:54:52 -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,
	Bob Copeland <me@...copeland.com>,
	linux-wireless@...r.kernel.org, linville@...driver.com,
	mb@...sch.de, ath5k-devel@...ema.h4ckr.net,
	Nick Kossifidis <mickflemm@...il.com>,
	Luis Rodriguez <lrodriguez@...eros.com>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [014/116] ath5k: dont use external sleep clock in AP mode

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

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

From: Bob Copeland <me@...copeland.com>

commit 5d6ce628f986d1a3c523cbb0a5a52095c48cc332 upstream

When using the external sleep clock in AP mode, the
TSF increments too quickly, causing beacon interval
to be much lower than it is supposed to be, resulting
in lots of beacon-not-ready interrupts.

This fixes http://bugzilla.kernel.org/show_bug.cgi?id=14802.

Signed-off-by: Bob Copeland <me@...copeland.com>
Acked-by: Nick Kossifidis <mickflemm@...il.com>
Signed-off-by: John W. Linville <linville@...driver.com>
Cc: Luis Rodriguez <lrodriguez@...eros.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/net/wireless/ath/ath5k/reset.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/net/wireless/ath/ath5k/reset.c
+++ b/drivers/net/wireless/ath/ath5k/reset.c
@@ -1382,8 +1382,9 @@ int ath5k_hw_reset(struct ath5k_hw *ah,
 	 * Set clocks to 32KHz operation and use an
 	 * external 32KHz crystal when sleeping if one
 	 * exists */
-	if (ah->ah_version == AR5K_AR5212)
-			ath5k_hw_set_sleep_clock(ah, true);
+	if (ah->ah_version == AR5K_AR5212 &&
+	    ah->ah_op_mode != NL80211_IFTYPE_AP)
+		ath5k_hw_set_sleep_clock(ah, true);
 
 	/*
 	 * Disable beacons and reset the register


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