Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...

[pandora-kernel.git] / net / wireless / reg.c

diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index ab801a1..02751db 100644 (file)
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -106,6 +106,9 @@ struct reg_beacon {
 static void reg_todo(struct work_struct *work);
 static DECLARE_WORK(reg_work, reg_todo);
 
+static void reg_timeout_work(struct work_struct *work);
+static DECLARE_DELAYED_WORK(reg_timeout, reg_timeout_work);
+
 /* We keep a static world regulatory domain in case of the absence of CRDA */
 static const struct ieee80211_regdomain world_regdom = {
        .n_reg_rules = 5,
@@ -669,11 +672,9 @@ static int freq_reg_info_regd(struct wiphy *wiphy,
        for (i = 0; i < regd->n_reg_rules; i++) {
                const struct ieee80211_reg_rule *rr;
                const struct ieee80211_freq_range *fr = NULL;
-               const struct ieee80211_power_rule *pr = NULL;
 
                rr = &regd->reg_rules[i];
                fr = &rr->freq_range;
-               pr = &rr->power_rule;
 
                /*
                 * We only need to know if one frequency rule was
@@ -902,7 +903,7 @@ static bool ignore_reg_update(struct wiphy *wiphy,
            initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
            !is_world_regdom(last_request->alpha2)) {
                REG_DBG_PRINT("Ignoring regulatory request %s "
-                             "since the driver requires its own regulaotry "
+                             "since the driver requires its own regulatory "
                              "domain to be set first",
                              reg_initiator_name(initiator));
                return true;
@@ -1124,12 +1125,13 @@ void wiphy_update_regulatory(struct wiphy *wiphy,
        enum ieee80211_band band;
 
        if (ignore_reg_update(wiphy, initiator))
-               goto out;
+               return;
+
        for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
                if (wiphy->bands[band])
                        handle_band(wiphy, band, initiator);
        }
-out:
+
        reg_process_beacons(wiphy);
        reg_process_ht_flags(wiphy);
        if (wiphy->reg_notifier)
@@ -1330,6 +1332,9 @@ static void reg_set_request_processed(void)
                need_more_processing = true;
        spin_unlock(&reg_requests_lock);
 
+       if (last_request->initiator == NL80211_REGDOM_SET_BY_USER)
+               cancel_delayed_work_sync(&reg_timeout);
+
        if (need_more_processing)
                schedule_work(&reg_work);
 }
@@ -1440,8 +1445,18 @@ static void reg_process_hint(struct regulatory_request *reg_request)
        r = __regulatory_hint(wiphy, reg_request);
        /* This is required so that the orig_* parameters are saved */
        if (r == -EALREADY && wiphy &&
-           wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY)
+           wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY) {
                wiphy_update_regulatory(wiphy, initiator);
+               return;
+       }
+
+       /*
+        * We only time out user hints, given that they should be the only
+        * source of bogus requests.
+        */
+       if (r != -EALREADY &&
+           reg_request->initiator == NL80211_REGDOM_SET_BY_USER)
+               schedule_delayed_work(&reg_timeout, msecs_to_jiffies(3142));
 }
 
 /*
@@ -1744,6 +1759,8 @@ static void restore_regulatory_settings(bool reset_user)
 {
        char alpha2[2];
        struct reg_beacon *reg_beacon, *btmp;
+       struct regulatory_request *reg_request, *tmp;
+       LIST_HEAD(tmp_reg_req_list);
 
        mutex_lock(&cfg80211_mutex);
        mutex_lock(&reg_mutex);
@@ -1751,6 +1768,25 @@ static void restore_regulatory_settings(bool reset_user)
        reset_regdomains();
        restore_alpha2(alpha2, reset_user);
 
+       /*
+        * If there's any pending requests we simply
+        * stash them to a temporary pending queue and
+        * add then after we've restored regulatory
+        * settings.
+        */
+       spin_lock(&reg_requests_lock);
+       if (!list_empty(&reg_requests_list)) {
+               list_for_each_entry_safe(reg_request, tmp,
+                                        &reg_requests_list, list) {
+                       if (reg_request->initiator !=
+                           NL80211_REGDOM_SET_BY_USER)
+                               continue;
+                       list_del(&reg_request->list);
+                       list_add_tail(&reg_request->list, &tmp_reg_req_list);
+               }
+       }
+       spin_unlock(&reg_requests_lock);
+
        /* Clear beacon hints */
        spin_lock_bh(&reg_pending_beacons_lock);
        if (!list_empty(&reg_pending_beacons)) {
@@ -1785,8 +1821,31 @@ static void restore_regulatory_settings(bool reset_user)
         */
        if (is_an_alpha2(alpha2))
                regulatory_hint_user(user_alpha2);
-}
 
+       if (list_empty(&tmp_reg_req_list))
+               return;
+
+       mutex_lock(&cfg80211_mutex);
+       mutex_lock(&reg_mutex);
+
+       spin_lock(&reg_requests_lock);
+       list_for_each_entry_safe(reg_request, tmp, &tmp_reg_req_list, list) {
+               REG_DBG_PRINT("Adding request for country %c%c back "
+                             "into the queue\n",
+                             reg_request->alpha2[0],
+                             reg_request->alpha2[1]);
+               list_del(&reg_request->list);
+               list_add_tail(&reg_request->list, &reg_requests_list);
+       }
+       spin_unlock(&reg_requests_lock);
+
+       mutex_unlock(&reg_mutex);
+       mutex_unlock(&cfg80211_mutex);
+
+       REG_DBG_PRINT("Kicking the queue\n");
+
+       schedule_work(&reg_work);
+}
 
 void regulatory_hint_disconnect(void)
 {
@@ -2125,6 +2184,13 @@ out:
        mutex_unlock(&reg_mutex);
 }
 
+static void reg_timeout_work(struct work_struct *work)
+{
+       REG_DBG_PRINT("Timeout while waiting for CRDA to reply, "
+                     "restoring regulatory settings");
+       restore_regulatory_settings(true);
+}
+
 int __init regulatory_init(void)
 {
        int err = 0;
@@ -2178,6 +2244,7 @@ void /* __init_or_exit */ regulatory_exit(void)
        struct reg_beacon *reg_beacon, *btmp;
 
        cancel_work_sync(&reg_work);
+       cancel_delayed_work_sync(&reg_timeout);
 
        mutex_lock(&cfg80211_mutex);
        mutex_lock(&reg_mutex);