Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (22 commits)
  tun: Multicast handling in tun_chr_ioctl() needs proper locking.
  [NET]: Fix heavy stack usage in seq_file output routines.
  [AF_UNIX] Initialise UNIX sockets before general device initcalls
  [RTNETLINK]: Fix bogus ASSERT_RTNL warning
  iwlwifi: Fix built-in compilation of iwlcore (part 2)
  tun: Fix minor race in TUNSETLINK ioctl handling.
  ppp_generic: use stats from net_device structure
  iwlwifi: Don't unlock priv->mutex if it isn't locked
  wireless: rndis_wlan: modparam_workaround_interval is never below 0.
  prism54: prism54_get_encode() test below 0 on unsigned index
  mac80211: update mesh EID values
  b43: Workaround DMA quirks
  mac80211: fix use before check of Qdisc length
  net/mac80211/rx.c: fix off-by-one
  mac80211: Fix race between ieee80211_rx_bss_put and lookup routines.
  ath5k: Fix radio identification on AR5424/2424
  ssb: Fix all-ones boardflags
  b43: Add more btcoexist workarounds
  b43: Fix HostFlags data types
  b43: Workaround invalid bluetooth settings
  ...

1 files changed, 25 insertions, 3 deletions

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 6b75cb6c630..a5e5c31c23a 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2248,10 +2248,13 @@ static void ieee80211_rx_bss_put(struct net_device *dev,
 				 struct ieee80211_sta_bss *bss)
 {
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
-	if (!atomic_dec_and_test(&bss->users))
+
+	local_bh_disable();
+	if (!atomic_dec_and_lock(&bss->users, &local->sta_bss_lock)) {
+		local_bh_enable();
 		return;
+	}
 
-	spin_lock_bh(&local->sta_bss_lock);
 	__ieee80211_rx_bss_hash_del(dev, bss);
 	list_del(&bss->list);
 	spin_unlock_bh(&local->sta_bss_lock);
@@ -2709,7 +2712,26 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
 			bss->wmm_ie_len = elems.wmm_param_len + 2;
 		} else
 			bss->wmm_ie_len = 0;
-	} else if (!elems.wmm_param && bss->wmm_ie) {
+	} else if (elems.wmm_info &&
+		    (!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_info_len ||
+		     memcmp(bss->wmm_ie, elems.wmm_info, elems.wmm_info_len))) {
+		 /* As for certain AP's Fifth bit is not set in WMM IE in
+		  * beacon frames.So while parsing the beacon frame the
+		  * wmm_info structure is used instead of wmm_param.
+		  * wmm_info structure was never used to set bss->wmm_ie.
+		  * This code fixes this problem by copying the WME
+		  * information from wmm_info to bss->wmm_ie and enabling
+		  * n-band association.
+		  */
+		kfree(bss->wmm_ie);
+		bss->wmm_ie = kmalloc(elems.wmm_info_len + 2, GFP_ATOMIC);
+		if (bss->wmm_ie) {
+			memcpy(bss->wmm_ie, elems.wmm_info - 2,
+			       elems.wmm_info_len + 2);
+			bss->wmm_ie_len = elems.wmm_info_len + 2;
+		} else
+			bss->wmm_ie_len = 0;
+	} else if (!elems.wmm_param && !elems.wmm_info && bss->wmm_ie) {
 		kfree(bss->wmm_ie);
 		bss->wmm_ie = NULL;
 		bss->wmm_ie_len = 0;