mac80211: fix LED in idle handling

feng xiangjun reports that my

commit 382a103b2b528a3085cde4ac56fc69d92a828b72
Author: Johannes Berg <johannes.berg@intel.com>
Date:   Fri Mar 22 22:30:09 2013 +0100

    mac80211: fix idle handling sequence

broke the wireless status LED. The reason is that
we now call ieee80211_idle_off() when the channel
context is assigned, and that doesn't recalculate
the LED state. Fix this by making that function a
wrapper around most of idle recalculation while
forcing active.

Reported-by: feng xiangjun <fengxj325@gmail.com>
Tested-by: feng xiangjun <fengxj325@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 58150f877ec3fe83f29adb2df4caf5bb617e3358..9ed49ad0380f151fc5ad5448e953f6497d800291 100644 (file)
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -78,7 +78,7 @@ void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata)
                ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_TXPOWER);
 }
 
-u32 ieee80211_idle_off(struct ieee80211_local *local)
+static u32 __ieee80211_idle_off(struct ieee80211_local *local)
 {
        if (!(local->hw.conf.flags & IEEE80211_CONF_IDLE))
                return 0;
@@ -87,7 +87,7 @@ u32 ieee80211_idle_off(struct ieee80211_local *local)
        return IEEE80211_CONF_CHANGE_IDLE;
 }
 
-static u32 ieee80211_idle_on(struct ieee80211_local *local)
+static u32 __ieee80211_idle_on(struct ieee80211_local *local)
 {
        if (local->hw.conf.flags & IEEE80211_CONF_IDLE)
                return 0;
@@ -98,16 +98,18 @@ static u32 ieee80211_idle_on(struct ieee80211_local *local)
        return IEEE80211_CONF_CHANGE_IDLE;
 }
 
-void ieee80211_recalc_idle(struct ieee80211_local *local)
+static u32 __ieee80211_recalc_idle(struct ieee80211_local *local,
+                                  bool force_active)
 {
        bool working = false, scanning, active;
        unsigned int led_trig_start = 0, led_trig_stop = 0;
        struct ieee80211_roc_work *roc;
-       u32 change;
 
        lockdep_assert_held(&local->mtx);
 
-       active = !list_empty(&local->chanctx_list) || local->monitors;
+       active = force_active ||
+                !list_empty(&local->chanctx_list) ||
+                local->monitors;
 
        if (!local->ops->remain_on_channel) {
                list_for_each_entry(roc, &local->roc_list, list) {
@@ -132,9 +134,18 @@ void ieee80211_recalc_idle(struct ieee80211_local *local)
        ieee80211_mod_tpt_led_trig(local, led_trig_start, led_trig_stop);
 
        if (working || scanning || active)
-               change = ieee80211_idle_off(local);
-       else
-               change = ieee80211_idle_on(local);
+               return __ieee80211_idle_off(local);
+       return __ieee80211_idle_on(local);
+}
+
+u32 ieee80211_idle_off(struct ieee80211_local *local)
+{
+       return __ieee80211_recalc_idle(local, true);
+}
+
+void ieee80211_recalc_idle(struct ieee80211_local *local)
+{
+       u32 change = __ieee80211_recalc_idle(local, false);
        if (change)
                ieee80211_hw_config(local, change);
 }