From: Christian Lamparter <chunkeey@googlemail.com>
Date: Sun, 26 Sep 2010 21:06:56 +0000 (+0200)
Subject: carl9170: fix WARN_ON triggered by Broadcom HT STAs
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9c655c8be9053a65886ac3e06420399a9bfdbd70;p=openwrt%2Fstaging%2Fblogic.git

carl9170: fix WARN_ON triggered by Broadcom HT STAs

Broadcom's Windows driver for the 4313 advertises
an ampdu density of 7 => 16 us. The AR9170 MAC on
the other hand only supports densities up to 8 us.

This patch removes the noisy WARN_ON, because
there is nothing we can do about it.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/ath/carl9170/main.c b/drivers/net/wireless/ath/carl9170/main.c
index a8b0cec78b32..84bd38e9961c 100644
--- a/drivers/net/wireless/ath/carl9170/main.c
+++ b/drivers/net/wireless/ath/carl9170/main.c
@@ -1248,7 +1248,7 @@ static int carl9170_op_ampdu_action(struct ieee80211_hw *hw,
 
 	switch (action) {
 	case IEEE80211_AMPDU_TX_START:
-		if (WARN_ON_ONCE(!sta_info->ht_sta))
+		if (!sta_info->ht_sta)
 			return -EOPNOTSUPP;
 
 		rcu_read_lock();