[PATCH 1/1] mac80211: move netif_carrier_on to after ieee80211_bss_info_change_notify

[Tomas Winkler <tomas.winkler@intel.com>]

From: Guy Cohen <guy.cohen@intel.com>

Putting netif_carrier_on before configuring the driver/device with the
new association state may cause a race (tx frames may be sent before
configuration is done)

Signed-off-by: Guy Cohen <guy.cohen@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
 net/mac80211/mlme.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 37ea04f..cb414de 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -564,15 +564,14 @@ static void ieee80211_set_associated(struct net_device *dev,
 			sdata->bss_conf.ht_bss_conf = &conf->ht_bss_conf;
 		}
 
-		netif_carrier_on(dev);
 		ifsta->flags |= IEEE80211_STA_PREV_BSSID_SET;
 		memcpy(ifsta->prev_bssid, sdata->u.sta.bssid, ETH_ALEN);
 		memcpy(wrqu.ap_addr.sa_data, sdata->u.sta.bssid, ETH_ALEN);
 		ieee80211_sta_send_associnfo(dev, ifsta);
 	} else {
+		netif_carrier_off(dev);
 		ieee80211_sta_tear_down_BA_sessions(dev, ifsta->bssid);
 		ifsta->flags &= ~IEEE80211_STA_ASSOCIATED;
-		netif_carrier_off(dev);
 		changed |= ieee80211_reset_erp_info(dev);
 
 		sdata->bss_conf.assoc_ht = 0;
@@ -586,6 +585,10 @@ static void ieee80211_set_associated(struct net_device *dev,
 
 	sdata->bss_conf.assoc = assoc;
 	ieee80211_bss_info_change_notify(sdata, changed);
+
+	if (assoc)
+		netif_carrier_on(dev);
+
 	wrqu.ap_addr.sa_family = ARPHRD_ETHER;
 	wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL);
 }
-- 
1.5.4.1

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