010-remove-noack-warn.patch

--- a/net/mac80211/tx.c	2012-12-24 14:30:46.000000000 +0800
+++ b/net/mac80211/tx.c	2012-12-24 16:07:42.000000000 +0800
@@ -694,8 +694,8 @@
 	if (unlikely(!info->control.rates[0].count))
 		info->control.rates[0].count = 1;
 
-	if (WARN_ON_ONCE((info->control.rates[0].count > 1) &&
-			 (info->flags & IEEE80211_TX_CTL_NO_ACK)))
+	if ((info->control.rates[0].count > 1) &&
+			 (info->flags & IEEE80211_TX_CTL_NO_ACK))
 		info->control.rates[0].count = 1;
 
 	if (is_multicast_ether_addr(hdr->addr1)) {