KVM: Simplify coalesced mmio initialization

[safe/jmp/linux-2.6] / net / mac80211 / scan.c

diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 88a9a1b..bc17cf7 100644 (file)
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -227,7 +227,8 @@ static bool ieee80211_prep_hw_scan(struct ieee80211_local *local)
 static void ieee80211_scan_ps_enable(struct ieee80211_sub_if_data *sdata)
 {
        struct ieee80211_local *local = sdata->local;
-       bool ps = false;
+
+       local->scan_ps_enabled = false;
 
        /* FIXME: what to do when local->pspolling is true? */
 
@@ -235,12 +236,13 @@ static void ieee80211_scan_ps_enable(struct ieee80211_sub_if_data *sdata)
        cancel_work_sync(&local->dynamic_ps_enable_work);
 
        if (local->hw.conf.flags & IEEE80211_CONF_PS) {
-               ps = true;
+               local->scan_ps_enabled = true;
                local->hw.conf.flags &= ~IEEE80211_CONF_PS;
                ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
        }
 
-       if (!ps || !(local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK))
+       if (!(local->scan_ps_enabled) ||
+           !(local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK))
                /*
                 * If power save was enabled, no need to send a nullfunc
                 * frame because AP knows that we are sleeping. But if the
@@ -261,7 +263,7 @@ static void ieee80211_scan_ps_disable(struct ieee80211_sub_if_data *sdata)
 
        if (!local->ps_sdata)
                ieee80211_send_nullfunc(local, sdata, 0);
-       else {
+       else if (local->scan_ps_enabled) {
                /*
                 * In !IEEE80211_HW_PS_NULLFUNC_STACK case the hardware
                 * will send a nullfunc frame with the powersave bit set
@@ -277,6 +279,16 @@ static void ieee80211_scan_ps_disable(struct ieee80211_sub_if_data *sdata)
                 */
                local->hw.conf.flags |= IEEE80211_CONF_PS;
                ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
+       } else if (local->hw.conf.dynamic_ps_timeout > 0) {
+               /*
+                * If IEEE80211_CONF_PS was not set and the dynamic_ps_timer
+                * had been running before leaving the operating channel,
+                * restart the timer now and send a nullfunc frame to inform
+                * the AP that we are awake.
+                */
+               ieee80211_send_nullfunc(local, sdata, 0);
+               mod_timer(&local->dynamic_ps_timer, jiffies +
+                         msecs_to_jiffies(local->hw.conf.dynamic_ps_timeout));
        }
 }
 
@@ -341,10 +353,10 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
                if (sdata->vif.type == NL80211_IFTYPE_STATION) {
                        if (sdata->u.mgd.associated) {
                                ieee80211_scan_ps_disable(sdata);
-                               netif_wake_queue(sdata->dev);
+                               netif_tx_wake_all_queues(sdata->dev);
                        }
                } else
-                       netif_wake_queue(sdata->dev);
+                       netif_tx_wake_all_queues(sdata->dev);
 
                /* re-enable beaconing */
                if (sdata->vif.type == NL80211_IFTYPE_AP ||
@@ -399,7 +411,7 @@ static int ieee80211_start_sw_scan(struct ieee80211_local *local)
                 * are handled in the scan state machine
                 */
                if (sdata->vif.type != NL80211_IFTYPE_STATION)
-                       netif_stop_queue(sdata->dev);
+                       netif_tx_stop_all_queues(sdata->dev);
        }
        mutex_unlock(&local->iflist_mtx);
 
@@ -427,6 +439,16 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
        if (local->scan_req)
                return -EBUSY;
 
+       if (req != local->int_scan_req &&
+           sdata->vif.type == NL80211_IFTYPE_STATION &&
+           !list_empty(&ifmgd->work_list)) {
+               /* actually wait for the work it's doing to finish/time out */
+               set_bit(IEEE80211_STA_REQ_SCAN, &ifmgd->request);
+               local->scan_req = req;
+               local->scan_sdata = sdata;
+               return 0;
+       }
+
        if (local->ops->hw_scan) {
                u8 *ies;
 
@@ -451,14 +473,6 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
        local->scan_req = req;
        local->scan_sdata = sdata;
 
-       if (req != local->int_scan_req &&
-           sdata->vif.type == NL80211_IFTYPE_STATION &&
-           !list_empty(&ifmgd->work_list)) {
-               /* actually wait for the work it's doing to finish/time out */
-               set_bit(IEEE80211_STA_REQ_SCAN, &ifmgd->request);
-               return 0;
-       }
-
        if (local->ops->hw_scan)
                __set_bit(SCAN_HW_SCANNING, &local->scanning);
        else
@@ -563,7 +577,7 @@ static void ieee80211_scan_state_leave_oper_channel(struct ieee80211_local *loca
                        continue;
 
                if (sdata->vif.type == NL80211_IFTYPE_STATION) {
-                       netif_stop_queue(sdata->dev);
+                       netif_tx_stop_all_queues(sdata->dev);
                        if (sdata->u.mgd.associated)
                                ieee80211_scan_ps_enable(sdata);
                }
@@ -598,7 +612,7 @@ static void ieee80211_scan_state_enter_oper_channel(struct ieee80211_local *loca
                if (sdata->vif.type == NL80211_IFTYPE_STATION) {
                        if (sdata->u.mgd.associated)
                                ieee80211_scan_ps_disable(sdata);
-                       netif_wake_queue(sdata->dev);
+                       netif_tx_wake_all_queues(sdata->dev);
                }
        }
        mutex_unlock(&local->iflist_mtx);
@@ -614,23 +628,14 @@ static void ieee80211_scan_state_set_channel(struct ieee80211_local *local,
 {
        int skip;
        struct ieee80211_channel *chan;
-       struct ieee80211_sub_if_data *sdata = local->scan_sdata;
 
        skip = 0;
        chan = local->scan_req->channels[local->scan_channel_idx];
 
-       if (chan->flags & IEEE80211_CHAN_DISABLED ||
-           (sdata->vif.type == NL80211_IFTYPE_ADHOC &&
-            chan->flags & IEEE80211_CHAN_NO_IBSS))
+       local->scan_channel = chan;
+       if (ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL))
                skip = 1;
 
-       if (!skip) {
-               local->scan_channel = chan;
-               if (ieee80211_hw_config(local,
-                                       IEEE80211_CONF_CHANGE_CHANNEL))
-                       skip = 1;
-       }
-
        /* advance state machine to next channel/band */
        local->scan_channel_idx++;