2 files changed, 29 insertions, 11 deletions

diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index c565689f0b9f..3332d5bce317 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -63,6 +63,10 @@ static struct regulatory_request *last_request;
 /* To trigger userspace events */
 static struct platform_device *reg_pdev;
 
+static struct device_type reg_device_type = {
+        .uevent = reg_device_uevent,
+};
+
 /*
  * Central wireless core regulatory domains, we only need two,
  * the current one and a world regulatory domain in case we have no
@@ -362,16 +366,11 @@ static inline void reg_regdb_query(const char *alpha2) {}
 
 /*
  * This lets us keep regulatory code which is updated on a regulatory
- * basis in userspace.
+ * basis in userspace. Country information is filled in by
+ * reg_device_uevent
  */
 static int call_crda(const char *alpha2)
 {
-        char country_env[9 + 2] = "COUNTRY=";
-        char *envp[] = {
-                country_env,
-                NULL
-        };
-
         if (!is_world_regdom((char *) alpha2))
                 pr_info("Calling CRDA for country: %c%c\n",
                         alpha2[0], alpha2[1]);
@@ -381,10 +380,7 @@ static int call_crda(const char *alpha2)
         /* query internal regulatory database (if it exists) */
         reg_regdb_query(alpha2);
 
-        country_env[8] = alpha2[0];
-        country_env[9] = alpha2[1];
-
-        return kobject_uevent_env(&reg_pdev->dev.kobj, KOBJ_CHANGE, envp);
+        return kobject_uevent(&reg_pdev->dev.kobj, KOBJ_CHANGE);
 }
 
 /* Used by nl80211 before kmalloc'ing our regulatory domain */
@@ -2087,6 +2083,25 @@ int set_regdom(const struct ieee80211_regdomain *rd)
         return r;
 }
 
+#ifdef CONFIG_HOTPLUG
+int reg_device_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+        if (last_request && !last_request->processed) {
+                if (add_uevent_var(env, "COUNTRY=%c%c",
+                                   last_request->alpha2[0],
+                                   last_request->alpha2[1]))
+                        return -ENOMEM;
+        }
+
+        return 0;
+}
+#else
+int reg_device_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+        return -ENODEV;
+}
+#endif /* CONFIG_HOTPLUG */
+
 /* Caller must hold cfg80211_mutex */
 void reg_device_remove(struct wiphy *wiphy)
 {
@@ -2118,6 +2133,8 @@ int __init regulatory_init(void)
         if (IS_ERR(reg_pdev))
                 return PTR_ERR(reg_pdev);
 
+        reg_pdev->dev.type = &reg_device_type;
+
         spin_lock_init(&reg_requests_lock);
         spin_lock_init(&reg_pending_beacons_lock);
 
diff --git a/net/wireless/reg.h b/net/wireless/reg.h
index c4695d07af23..b67d1c3a2fb9 100644
--- a/net/wireless/reg.h
+++ b/net/wireless/reg.h
@@ -8,6 +8,7 @@ bool reg_is_valid_request(const char *alpha2);
 
 int regulatory_hint_user(const char *alpha2);
 
+int reg_device_uevent(struct device *dev, struct kobj_uevent_env *env);
 void reg_device_remove(struct wiphy *wiphy);
 
 int __init regulatory_init(void);