diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index b37bd5a..8690a45 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -1688,6 +1688,9 @@ enum nl80211_commands {
  *
  * @NL80211_ATTR_MAC_MASK: MAC address mask
  *
+ * @NL80211_ATTR_REG_INDOOR: flag attribute, if set indicates that the device
+ *      is operating in an indoor environment.
+ *
  * @NUM_NL80211_ATTR: total number of nl80211_attrs available
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
@@ -2045,6 +2048,8 @@ enum nl80211_attrs {
 
 	NL80211_ATTR_MAC_MASK,
 
+	NL80211_ATTR_REG_INDOOR,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 7ca4b51..09b089b 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -396,6 +396,7 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 	[NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 	[NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 	[NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
+	[NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 };
 
 /* policy for the key attributes */
@@ -4918,6 +4919,7 @@ static int parse_reg_rule(struct nlattr *tb[],
 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
 {
 	char *data = NULL;
+	bool is_indoor;
 	enum nl80211_user_reg_hint_type user_reg_hint_type;
 
 	/*
@@ -4944,7 +4946,8 @@ static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
 		data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
 		return regulatory_hint_user(data, user_reg_hint_type);
 	case NL80211_USER_REG_HINT_INDOOR:
-		return regulatory_hint_indoor_user();
+		is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
+		return regulatory_hint_indoor(is_indoor, info->snd_portid);
 	default:
 		return -EINVAL;
 	}
@@ -12506,6 +12509,11 @@ static int nl80211_netlink_notify(struct notifier_block * nb,
 
 	rcu_read_unlock();
 
+	/*
+	 * It is possible that the user space process that is controlling the
+	 * indoor setting disappeared, so notify the regulatory core.
+	 */
+	regulatory_netlink_notify(notify->portid);
 	return NOTIFY_OK;
 }
 
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 7b83098..fa93fd2 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -82,17 +82,12 @@
  *	be intersected with the current one.
  * @REG_REQ_ALREADY_SET: the regulatory request will not change the current
  *	regulatory settings, and no further processing is required.
- * @REG_REQ_USER_HINT_HANDLED: a non alpha2  user hint was handled and no
- *	further processing is required, i.e., not need to update last_request
- *	etc. This should be used for user hints that do not provide an alpha2
- *	but some other type of regulatory hint, i.e., indoor operation.
  */
 enum reg_request_treatment {
 	REG_REQ_OK,
 	REG_REQ_IGNORE,
 	REG_REQ_INTERSECT,
 	REG_REQ_ALREADY_SET,
-	REG_REQ_USER_HINT_HANDLED,
 };
 
 static struct regulatory_request core_request_world = {
@@ -133,9 +128,12 @@ static int reg_num_devs_support_basehint;
  * State variable indicating if the platform on which the devices
  * are attached is operating in an indoor environment. The state variable
  * is relevant for all registered devices.
- * (protected by RTNL)
  */
 static bool reg_is_indoor;
+static spinlock_t reg_indoor_lock;
+
+/* Used to track the userspace process controlling the indoor setting */
+static u32 reg_is_indoor_portid;
 
 static const struct ieee80211_regdomain *get_cfg80211_regdom(void)
 {
@@ -1248,13 +1246,6 @@ static bool reg_request_cell_base(struct regulatory_request *request)
 	return request->user_reg_hint_type == NL80211_USER_REG_HINT_CELL_BASE;
 }
 
-static bool reg_request_indoor(struct regulatory_request *request)
-{
-	if (request->initiator != NL80211_REGDOM_SET_BY_USER)
-		return false;
-	return request->user_reg_hint_type == NL80211_USER_REG_HINT_INDOOR;
-}
-
 bool reg_last_request_cell_base(void)
 {
 	return reg_request_cell_base(get_last_request());
@@ -1808,11 +1799,6 @@ __reg_process_hint_user(struct regulatory_request *user_request)
 {
 	struct regulatory_request *lr = get_last_request();
 
-	if (reg_request_indoor(user_request)) {
-		reg_is_indoor = true;
-		return REG_REQ_USER_HINT_HANDLED;
-	}
-
 	if (reg_request_cell_base(user_request))
 		return reg_ignore_cell_hint(user_request);
 
@@ -1860,8 +1846,7 @@ reg_process_hint_user(struct regulatory_request *user_request)
 
 	treatment = __reg_process_hint_user(user_request);
 	if (treatment == REG_REQ_IGNORE ||
-	    treatment == REG_REQ_ALREADY_SET ||
-	    treatment == REG_REQ_USER_HINT_HANDLED) {
+	    treatment == REG_REQ_ALREADY_SET) {
 		reg_free_request(user_request);
 		return treatment;
 	}
@@ -1922,7 +1907,6 @@ reg_process_hint_driver(struct wiphy *wiphy,
 	case REG_REQ_OK:
 		break;
 	case REG_REQ_IGNORE:
-	case REG_REQ_USER_HINT_HANDLED:
 		reg_free_request(driver_request);
 		return treatment;
 	case REG_REQ_INTERSECT:
@@ -2022,7 +2006,6 @@ reg_process_hint_country_ie(struct wiphy *wiphy,
 	case REG_REQ_OK:
 		break;
 	case REG_REQ_IGNORE:
-	case REG_REQ_USER_HINT_HANDLED:
 		/* fall through */
 	case REG_REQ_ALREADY_SET:
 		reg_free_request(country_ie_request);
@@ -2061,8 +2044,7 @@ static void reg_process_hint(struct regulatory_request *reg_request)
 	case NL80211_REGDOM_SET_BY_USER:
 		treatment = reg_process_hint_user(reg_request);
 		if (treatment == REG_REQ_IGNORE ||
-		    treatment == REG_REQ_ALREADY_SET ||
-		    treatment == REG_REQ_USER_HINT_HANDLED)
+		    treatment == REG_REQ_ALREADY_SET)
 			return;
 		queue_delayed_work(system_power_efficient_wq,
 				   &reg_timeout, msecs_to_jiffies(3142));
@@ -2218,22 +2200,51 @@ int regulatory_hint_user(const char *alpha2,
 	return 0;
 }
 
-int regulatory_hint_indoor_user(void)
+int regulatory_hint_indoor(bool is_indoor, u32 portid)
 {
-	struct regulatory_request *request;
+	spin_lock(&reg_indoor_lock);
 
-	request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL);
-	if (!request)
-		return -ENOMEM;
+	/*
+	 * Process only if there is a real change, so the original port ID is
+	 * saved (to handle cases that several processes try to change the
+	 * indoor setting).
+	 */
+	if (reg_is_indoor == is_indoor) {
+		spin_unlock(&reg_indoor_lock);
+		return 0;
+	}
 
-	request->wiphy_idx = WIPHY_IDX_INVALID;
-	request->initiator = NL80211_REGDOM_SET_BY_USER;
-	request->user_reg_hint_type = NL80211_USER_REG_HINT_INDOOR;
-	queue_regulatory_request(request);
+	reg_is_indoor = is_indoor;
+	if (reg_is_indoor)
+		reg_is_indoor_portid = portid;
+	else
+		reg_is_indoor_portid = 0;
+
+	spin_unlock(&reg_indoor_lock);
+
+	if (!is_indoor)
+		reg_check_channels();
 
 	return 0;
 }
 
+void regulatory_netlink_notify(u32 portid)
+{
+	spin_lock(&reg_indoor_lock);
+
+	if (reg_is_indoor_portid != portid) {
+		spin_unlock(&reg_indoor_lock);
+		return;
+	}
+
+	reg_is_indoor = false;
+	reg_is_indoor_portid = 0;
+
+	spin_unlock(&reg_indoor_lock);
+
+	reg_check_channels();
+}
+
 /* Driver hints */
 int regulatory_hint(struct wiphy *wiphy, const char *alpha2)
 {
@@ -2401,8 +2412,6 @@ static void restore_regulatory_settings(bool reset_user)
 
 	ASSERT_RTNL();
 
-	reg_is_indoor = false;
-
 	reset_regdomains(true, &world_regdom);
 	restore_alpha2(alpha2, reset_user);
 
@@ -2927,6 +2936,7 @@ int __init regulatory_init(void)
 
 	spin_lock_init(&reg_requests_lock);
 	spin_lock_init(&reg_pending_beacons_lock);
+	spin_lock_init(&reg_indoor_lock);
 
 	reg_regdb_size_check();
 
diff --git a/net/wireless/reg.h b/net/wireless/reg.h
index 5e48031..77cd8c0 100644
--- a/net/wireless/reg.h
+++ b/net/wireless/reg.h
@@ -25,7 +25,20 @@ enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy);
 
 int regulatory_hint_user(const char *alpha2,
 			 enum nl80211_user_reg_hint_type user_reg_hint_type);
-int regulatory_hint_indoor_user(void);
+
+/**
+ * regulatory_hint_indoor - hint operation in indoor env. or not
+ * @is_indoor: if true indicates that user space thinks that the
+ * device is operating in an indoor environment.
+ * @portid: the netlink port ID on which the hint was given.
+ */
+int regulatory_hint_indoor(bool is_indoor, u32 portid);
+
+/**
+ * regulatory_netlink_notify - notify on released netlink socket
+ * @portid: the netlink socket port ID
+ */
+void regulatory_netlink_notify(u32 portid);
 
 void wiphy_regulatory_register(struct wiphy *wiphy);
 void wiphy_regulatory_deregister(struct wiphy *wiphy);
