Add patch to fix ieee80211_do_stop (rhbz 892599)

1 files changed, 109 insertions, 0 deletions

diff --git a/mac80211_fixes_for_ieee80211_do_stop_while_suspend_v3.9.patch b/mac80211_fixes_for_ieee80211_do_stop_while_suspend_v3.9.patch
new file mode 100644
index 000000000..2f0cb5338
--- /dev/null
+++ b/mac80211_fixes_for_ieee80211_do_stop_while_suspend_v3.9.patch
@@ -0,0 +1,109 @@
+commit 801d929ca7d935ee199fd61d8ef914f51e892270
+Author: Felix Fietkau <nbd@openwrt.org>
+Date:   Sat Mar 2 19:05:47 2013 +0100
+
+    mac80211: another fix for idle handling in monitor mode
+    
+    When setting a monitor interface up or down, the idle state needs to be
+    recalculated, otherwise the hardware will just stay in its previous idle
+    state.
+    
+    Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+    Signed-off-by: Johannes Berg <johannes.berg@intel.com>
+
+diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
+index 640afab..baaa860 100644
+--- a/net/mac80211/iface.c
++++ b/net/mac80211/iface.c
+@@ -541,6 +541,9 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
+ 
+ 		ieee80211_adjust_monitor_flags(sdata, 1);
+ 		ieee80211_configure_filter(local);
++		mutex_lock(&local->mtx);
++		ieee80211_recalc_idle(local);
++		mutex_unlock(&local->mtx);
+ 
+ 		netif_carrier_on(dev);
+ 		break;
+@@ -812,6 +815,9 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
+ 
+ 		ieee80211_adjust_monitor_flags(sdata, -1);
+ 		ieee80211_configure_filter(local);
++		mutex_lock(&local->mtx);
++		ieee80211_recalc_idle(local);
++		mutex_unlock(&local->mtx);
+ 		break;
+ 	case NL80211_IFTYPE_P2P_DEVICE:
+ 		/* relies on synchronize_rcu() below */
+diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
+index baaa860..937174b 100644
+--- a/net/mac80211/iface.c
++++ b/net/mac80211/iface.c
+@@ -748,8 +748,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
+ 				 sdata->dev->addr_len);
+ 		spin_unlock_bh(&local->filter_lock);
+ 		netif_addr_unlock_bh(sdata->dev);
+-
+-		ieee80211_configure_filter(local);
++		/* configure filter latter (if not suspended) */
+ 	}
+ 
+ 	del_timer_sync(&local->dynamic_ps_timer);
+@@ -814,10 +813,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
+ 		}
+ 
+ 		ieee80211_adjust_monitor_flags(sdata, -1);
+-		ieee80211_configure_filter(local);
+-		mutex_lock(&local->mtx);
+-		ieee80211_recalc_idle(local);
+-		mutex_unlock(&local->mtx);
++		/* tell driver latter (if not suspended) */
+ 		break;
+ 	case NL80211_IFTYPE_P2P_DEVICE:
+ 		/* relies on synchronize_rcu() below */
+@@ -848,28 +844,30 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
+ 
+ 		drv_remove_interface_debugfs(local, sdata);
+ 
+-		if (going_down)
++		if (going_down && !local->suspended)
+ 			drv_remove_interface(local, sdata);
+ 	}
+ 
+ 	sdata->bss = NULL;
+ 
+-	ieee80211_recalc_ps(local, -1);
+-
+-	if (local->open_count == 0) {
+-		if (local->ops->napi_poll)
+-			napi_disable(&local->napi);
+-		ieee80211_clear_tx_pending(local);
+-		ieee80211_stop_device(local);
+-
+-		/* no reconfiguring after stop! */
+-		hw_reconf_flags = 0;
++	if (!local->suspended) {
++		if (local->open_count == 0) {
++			if (local->ops->napi_poll)
++				napi_disable(&local->napi);
++			ieee80211_clear_tx_pending(local);
++			ieee80211_stop_device(local);
++		} else {
++			ieee80211_configure_filter(local);
++			ieee80211_recalc_ps(local, -1);
++ 
++			mutex_lock(&local->mtx);
++			ieee80211_recalc_idle(local);
++			mutex_unlock(&local->mtx);
++
++			if (hw_reconf_flags)
++				ieee80211_hw_config(local, hw_reconf_flags);
+ 	}
+ 
+-	/* do after stop to avoid reconfiguring when we stop anyway */
+-	if (hw_reconf_flags)
+-		ieee80211_hw_config(local, hw_reconf_flags);
+-
+ 	spin_lock_irqsave(&local->queue_stop_reason_lock, flags);
+ 	for (i = 0; i < IEEE80211_MAX_QUEUES; i++) {
+ 		skb_queue_walk_safe(&local->pending[i], skb, tmp) {