Merge tag 'for-net-next-2021-08-19' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next

Luiz Augusto von Dentz says:

====================
bluetooth-next pull request for net-next:

 - Add support for Foxconn Mediatek Chip
 - Add support for LG LGSBWAC92/TWCM-K505D
 - hci_h5 flow control fixes and suspend support
 - Switch to use lock_sock for SCO and RFCOMM
 - Various fixes for extended advertising
 - Reword Intel's setup on btusb unifying the supported generations
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

9 files changed, 298 insertions, 180 deletions

diff --git a/net/6lowpan/debugfs.c b/net/6lowpan/debugfs.c
index 1c140af06d52..600b9563bfc5 100644
--- a/net/6lowpan/debugfs.c
+++ b/net/6lowpan/debugfs.c
@@ -170,7 +170,8 @@ static void lowpan_dev_debugfs_ctx_init(struct net_device *dev,
 	struct dentry *root;
 	char buf[32];
 
-	WARN_ON_ONCE(id > LOWPAN_IPHC_CTX_TABLE_SIZE);
+	if (WARN_ON_ONCE(id >= LOWPAN_IPHC_CTX_TABLE_SIZE))
+		return;
 
 	sprintf(buf, "%d", id);
 
diff --git a/net/bluetooth/cmtp/cmtp.h b/net/bluetooth/cmtp/cmtp.h
index c32638dddbf9..f6b9dc4e408f 100644
--- a/net/bluetooth/cmtp/cmtp.h
+++ b/net/bluetooth/cmtp/cmtp.h
@@ -26,7 +26,7 @@
 #include <linux/types.h>
 #include <net/bluetooth/bluetooth.h>
 
-#define BTNAMSIZ 18
+#define BTNAMSIZ 21
 
 /* CMTP ioctl defines */
 #define CMTPCONNADD	_IOW('C', 200, int)
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index e1a545c8a69f..8a47a3017d61 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1343,6 +1343,12 @@ int hci_inquiry(void __user *arg)
 		goto done;
 	}
 
+	/* Restrict maximum inquiry length to 60 seconds */
+	if (ir.length > 60) {
+		err = -EINVAL;
+		goto done;
+	}
+
 	hci_dev_lock(hdev);
 	if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX ||
 	    inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) {
@@ -1718,6 +1724,7 @@ static void hci_pend_le_actions_clear(struct hci_dev *hdev)
 int hci_dev_do_close(struct hci_dev *hdev)
 {
 	bool auto_off;
+	int err = 0;
 
 	BT_DBG("%s %p", hdev->name, hdev);
 
@@ -1727,10 +1734,18 @@ int hci_dev_do_close(struct hci_dev *hdev)
 	hci_request_cancel_all(hdev);
 	hci_req_sync_lock(hdev);
 
+	if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) &&
+	    !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
+	    test_bit(HCI_UP, &hdev->flags)) {
+		/* Execute vendor specific shutdown routine */
+		if (hdev->shutdown)
+			err = hdev->shutdown(hdev);
+	}
+
 	if (!test_and_clear_bit(HCI_UP, &hdev->flags)) {
 		cancel_delayed_work_sync(&hdev->cmd_timer);
 		hci_req_sync_unlock(hdev);
-		return 0;
+		return err;
 	}
 
 	hci_leds_update_powered(hdev, false);
@@ -1798,14 +1813,6 @@ int hci_dev_do_close(struct hci_dev *hdev)
 		clear_bit(HCI_INIT, &hdev->flags);
 	}
 
-	if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) &&
-	    !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
-	    test_bit(HCI_UP, &hdev->flags)) {
-		/* Execute vendor specific shutdown routine */
-		if (hdev->shutdown)
-			hdev->shutdown(hdev);
-	}
-
 	/* flush cmd  work */
 	flush_work(&hdev->cmd_work);
 
@@ -1845,7 +1852,7 @@ int hci_dev_do_close(struct hci_dev *hdev)
 	hci_req_sync_unlock(hdev);
 
 	hci_dev_put(hdev);
-	return 0;
+	return err;
 }
 
 int hci_dev_close(__u16 dev)
@@ -3751,11 +3758,18 @@ done:
 }
 
 /* Alloc HCI device */
-struct hci_dev *hci_alloc_dev(void)
+struct hci_dev *hci_alloc_dev_priv(int sizeof_priv)
 {
 	struct hci_dev *hdev;
+	unsigned int alloc_size;
+
+	alloc_size = sizeof(*hdev);
+	if (sizeof_priv) {
+		/* Fixme: May need ALIGN-ment? */
+		alloc_size += sizeof_priv;
+	}
 
-	hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
+	hdev = kzalloc(alloc_size, GFP_KERNEL);
 	if (!hdev)
 		return NULL;
 
@@ -3869,7 +3883,7 @@ struct hci_dev *hci_alloc_dev(void)
 
 	return hdev;
 }
-EXPORT_SYMBOL(hci_alloc_dev);
+EXPORT_SYMBOL(hci_alloc_dev_priv);
 
 /* Free HCI device */
 void hci_free_dev(struct hci_dev *hdev)
@@ -4034,13 +4048,13 @@ void hci_unregister_dev(struct hci_dev *hdev)
 	}
 
 	device_del(&hdev->dev);
-	/* Actual cleanup is deferred until hci_cleanup_dev(). */
+	/* Actual cleanup is deferred until hci_release_dev(). */
 	hci_dev_put(hdev);
 }
 EXPORT_SYMBOL(hci_unregister_dev);
 
-/* Cleanup HCI device */
-void hci_cleanup_dev(struct hci_dev *hdev)
+/* Release HCI device */
+void hci_release_dev(struct hci_dev *hdev)
 {
 	debugfs_remove_recursive(hdev->debugfs);
 	kfree_const(hdev->hw_info);
@@ -4067,7 +4081,9 @@ void hci_cleanup_dev(struct hci_dev *hdev)
 	hci_dev_unlock(hdev);
 
 	ida_simple_remove(&hci_index_ida, hdev->id);
+	kfree(hdev);
 }
+EXPORT_SYMBOL(hci_release_dev);
 
 /* Suspend HCI device */
 int hci_suspend_dev(struct hci_dev *hdev)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 1c3018202564..0bca035bf2dc 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -40,6 +40,8 @@
 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
 		 "\x00\x00\x00\x00\x00\x00\x00\x00"
 
+#define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000)
+
 /* Handle HCI Event packets */
 
 static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb,
@@ -1171,6 +1173,12 @@ static void hci_cc_le_set_random_addr(struct hci_dev *hdev, struct sk_buff *skb)
 
 	bacpy(&hdev->random_addr, sent);
 
+	if (!bacmp(&hdev->rpa, sent)) {
+		hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED);
+		queue_delayed_work(hdev->workqueue, &hdev->rpa_expired,
+				   secs_to_jiffies(hdev->rpa_timeout));
+	}
+
 	hci_dev_unlock(hdev);
 }
 
@@ -1201,24 +1209,30 @@ static void hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev,
 {
 	__u8 status = *((__u8 *) skb->data);
 	struct hci_cp_le_set_adv_set_rand_addr *cp;
-	struct adv_info *adv_instance;
+	struct adv_info *adv;
 
 	if (status)
 		return;
 
 	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR);
-	if (!cp)
+	/* Update only in case the adv instance since handle 0x00 shall be using
+	 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and
+	 * non-extended adverting.
+	 */
+	if (!cp || !cp->handle)
 		return;
 
 	hci_dev_lock(hdev);
 
-	if (!cp->handle) {
-		/* Store in hdev for instance 0 (Set adv and Directed advs) */
-		bacpy(&hdev->random_addr, &cp->bdaddr);
-	} else {
-		adv_instance = hci_find_adv_instance(hdev, cp->handle);
-		if (adv_instance)
-			bacpy(&adv_instance->random_addr, &cp->bdaddr);
+	adv = hci_find_adv_instance(hdev, cp->handle);
+	if (adv) {
+		bacpy(&adv->random_addr, &cp->bdaddr);
+		if (!bacmp(&hdev->rpa, &cp->bdaddr)) {
+			adv->rpa_expired = false;
+			queue_delayed_work(hdev->workqueue,
+					   &adv->rpa_expired_cb,
+					   secs_to_jiffies(hdev->rpa_timeout));
+		}
 	}
 
 	hci_dev_unlock(hdev);
@@ -1277,7 +1291,9 @@ static void hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev,
 					 struct sk_buff *skb)
 {
 	struct hci_cp_le_set_ext_adv_enable *cp;
+	struct hci_cp_ext_adv_set *set;
 	__u8 status = *((__u8 *) skb->data);
+	struct adv_info *adv = NULL, *n;
 
 	BT_DBG("%s status 0x%2.2x", hdev->name, status);
 
@@ -1288,22 +1304,48 @@ static void hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev,
 	if (!cp)
 		return;
 
+	set = (void *)cp->data;
+
 	hci_dev_lock(hdev);
 
+	if (cp->num_of_sets)
+		adv = hci_find_adv_instance(hdev, set->handle);
+
 	if (cp->enable) {
 		struct hci_conn *conn;
 
 		hci_dev_set_flag(hdev, HCI_LE_ADV);
 
+		if (adv)
+			adv->enabled = true;
+
 		conn = hci_lookup_le_connect(hdev);
 		if (conn)
 			queue_delayed_work(hdev->workqueue,
 					   &conn->le_conn_timeout,
 					   conn->conn_timeout);
 	} else {
+		if (adv) {
+			adv->enabled = false;
+			/* If just one instance was disabled check if there are
+			 * any other instance enabled before clearing HCI_LE_ADV
+			 */
+			list_for_each_entry_safe(adv, n, &hdev->adv_instances,
+						 list) {
+				if (adv->enabled)
+					goto unlock;
+			}
+		} else {
+			/* All instances shall be considered disabled */
+			list_for_each_entry_safe(adv, n, &hdev->adv_instances,
+						 list)
+				adv->enabled = false;
+		}
+
 		hci_dev_clear_flag(hdev, HCI_LE_ADV);
 	}
 
+unlock:
 	hci_dev_unlock(hdev);
 }
 
@@ -2306,19 +2348,20 @@ static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
 
 	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
 	if (conn) {
-		u8 type = conn->type;
-
 		mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
 				       conn->dst_type, status);
 
+		if (conn->type == LE_LINK) {
+			hdev->cur_adv_instance = conn->adv_instance;
+			hci_req_reenable_advertising(hdev);
+		}
+
 		/* If the disconnection failed for any reason, the upper layer
 		 * does not retry to disconnect in current implementation.
 		 * Hence, we need to do some basic cleanup here and re-enable
 		 * advertising if necessary.
 		 */
 		hci_conn_del(conn);
-		if (type == LE_LINK)
-			hci_req_reenable_advertising(hdev);
 	}
 
 	hci_dev_unlock(hdev);
@@ -2844,7 +2887,6 @@ static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
 	struct hci_conn_params *params;
 	struct hci_conn *conn;
 	bool mgmt_connected;
-	u8 type;
 
 	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
 
@@ -2899,10 +2941,7 @@ static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		}
 	}
 
-	type = conn->type;
-
 	hci_disconn_cfm(conn, ev->reason);
-	hci_conn_del(conn);
 
 	/* The suspend notifier is waiting for all devices to disconnect so
 	 * clear the bit from pending tasks and inform the wait queue.
@@ -2922,8 +2961,12 @@ static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
 	 * or until a connection is created or until the Advertising
 	 * is timed out due to Directed Advertising."
 	 */
-	if (type == LE_LINK)
+	if (conn->type == LE_LINK) {
+		hdev->cur_adv_instance = conn->adv_instance;
 		hci_req_reenable_advertising(hdev);
+	}
+
+	hci_conn_del(conn);
 
 unlock:
 	hci_dev_unlock(hdev);
@@ -3268,11 +3311,9 @@ unlock:
 	hci_dev_unlock(hdev);
 }
 
-static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev,
-					    u16 opcode, u8 ncmd)
+static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd)
 {
-	if (opcode != HCI_OP_NOP)
-		cancel_delayed_work(&hdev->cmd_timer);
+	cancel_delayed_work(&hdev->cmd_timer);
 
 	if (!test_bit(HCI_RESET, &hdev->flags)) {
 		if (ncmd) {
@@ -3647,7 +3688,7 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb,
 		break;
 	}
 
-	handle_cmd_cnt_and_timer(hdev, *opcode, ev->ncmd);
+	handle_cmd_cnt_and_timer(hdev, ev->ncmd);
 
 	hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
 			     req_complete_skb);
@@ -3748,7 +3789,7 @@ static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb,
 		break;
 	}
 
-	handle_cmd_cnt_and_timer(hdev, *opcode, ev->ncmd);
+	handle_cmd_cnt_and_timer(hdev, ev->ncmd);
 
 	/* Indicate request completion if the command failed. Also, if
 	 * we're not waiting for a special event and we get a success
@@ -4382,6 +4423,21 @@ static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
 
 	switch (ev->status) {
 	case 0x00:
+		/* The synchronous connection complete event should only be
+		 * sent once per new connection. Receiving a successful
+		 * complete event when the connection status is already
+		 * BT_CONNECTED means that the device is misbehaving and sent
+		 * multiple complete event packets for the same new connection.
+		 *
+		 * Registering the device more than once can corrupt kernel
+		 * memory, hence upon detecting this invalid event, we report
+		 * an error and ignore the packet.
+		 */
+		if (conn->state == BT_CONNECTED) {
+			bt_dev_err(hdev, "Ignoring connect complete event for existing connection");
+			goto unlock;
+		}
+
 		conn->handle = __le16_to_cpu(ev->handle);
 		conn->state  = BT_CONNECTED;
 		conn->type   = ev->link_type;
@@ -5104,9 +5160,64 @@ static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev,
 }
 #endif
 
+static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr,
+				u8 bdaddr_type, bdaddr_t *local_rpa)
+{
+	if (conn->out) {
+		conn->dst_type = bdaddr_type;
+		conn->resp_addr_type = bdaddr_type;
+		bacpy(&conn->resp_addr, bdaddr);
+
+		/* Check if the controller has set a Local RPA then it must be
+		 * used instead or hdev->rpa.
+		 */
+		if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
+			conn->init_addr_type = ADDR_LE_DEV_RANDOM;
+			bacpy(&conn->init_addr, local_rpa);
+		} else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) {
+			conn->init_addr_type = ADDR_LE_DEV_RANDOM;
+			bacpy(&conn->init_addr, &conn->hdev->rpa);
+		} else {
+			hci_copy_identity_address(conn->hdev, &conn->init_addr,
+						  &conn->init_addr_type);
+		}
+	} else {
+		conn->resp_addr_type = conn->hdev->adv_addr_type;
+		/* Check if the controller has set a Local RPA then it must be
+		 * used instead or hdev->rpa.
+		 */
+		if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) {
+			conn->resp_addr_type = ADDR_LE_DEV_RANDOM;
+			bacpy(&conn->resp_addr, local_rpa);
+		} else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
+			/* In case of ext adv, resp_addr will be updated in
+			 * Adv Terminated event.
+			 */
+			if (!ext_adv_capable(conn->hdev))
+				bacpy(&conn->resp_addr,
+				      &conn->hdev->random_addr);
+		} else {
+			bacpy(&conn->resp_addr, &conn->hdev->bdaddr);
+		}
+
+		conn->init_addr_type = bdaddr_type;
+		bacpy(&conn->init_addr, bdaddr);
+
+		/* For incoming connections, set the default minimum
+		 * and maximum connection interval. They will be used
+		 * to check if the parameters are in range and if not
+		 * trigger the connection update procedure.
+		 */
+		conn->le_conn_min_interval = conn->hdev->le_conn_min_interval;
+		conn->le_conn_max_interval = conn->hdev->le_conn_max_interval;
+	}
+}
+
 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
-			bdaddr_t *bdaddr, u8 bdaddr_type, u8 role, u16 handle,
-			u16 interval, u16 latency, u16 supervision_timeout)
+				 bdaddr_t *bdaddr, u8 bdaddr_type,
+				 bdaddr_t *local_rpa, u8 role, u16 handle,
+				 u16 interval, u16 latency,
+				 u16 supervision_timeout)
 {
 	struct hci_conn_params *params;
 	struct hci_conn *conn;
@@ -5154,32 +5265,7 @@ static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
 		cancel_delayed_work(&conn->le_conn_timeout);
 	}
 
-	if (!conn->out) {
-		/* Set the responder (our side) address type based on
-		 * the advertising address type.
-		 */
-		conn->resp_addr_type = hdev->adv_addr_type;
-		if (hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) {
-			/* In case of ext adv, resp_addr will be updated in
-			 * Adv Terminated event.
-			 */
-			if (!ext_adv_capable(hdev))
-				bacpy(&conn->resp_addr, &hdev->random_addr);
-		} else {
-			bacpy(&conn->resp_addr, &hdev->bdaddr);
-		}
-
-		conn->init_addr_type = bdaddr_type;
-		bacpy(&conn->init_addr, bdaddr);
-
-		/* For incoming connections, set the default minimum
-		 * and maximum connection interval. They will be used
-		 * to check if the parameters are in range and if not
-		 * trigger the connection update procedure.
-		 */
-		conn->le_conn_min_interval = hdev->le_conn_min_interval;
-		conn->le_conn_max_interval = hdev->le_conn_max_interval;
-	}
+	le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa);
 
 	/* Lookup the identity address from the stored connection
 	 * address and address type.
@@ -5236,6 +5322,13 @@ static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
 	conn->handle = handle;
 	conn->state = BT_CONFIG;
 
+	/* Store current advertising instance as connection advertising instance
+	 * when sotfware rotation is in use so it can be re-enabled when
+	 * disconnected.
+	 */
+	if (!ext_adv_capable(hdev))
+		conn->adv_instance = hdev->cur_adv_instance;
+
 	conn->le_conn_interval = interval;
 	conn->le_conn_latency = latency;
 	conn->le_supv_timeout = supervision_timeout;
@@ -5290,7 +5383,7 @@ static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
 	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
 
 	le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
-			     ev->role, le16_to_cpu(ev->handle),
+			     NULL, ev->role, le16_to_cpu(ev->handle),
 			     le16_to_cpu(ev->interval),
 			     le16_to_cpu(ev->latency),
 			     le16_to_cpu(ev->supervision_timeout));
@@ -5304,7 +5397,7 @@ static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev,
 	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
 
 	le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type,
-			     ev->role, le16_to_cpu(ev->handle),
+			     &ev->local_rpa, ev->role, le16_to_cpu(ev->handle),
 			     le16_to_cpu(ev->interval),
 			     le16_to_cpu(ev->latency),
 			     le16_to_cpu(ev->supervision_timeout));
@@ -5319,13 +5412,13 @@ static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, struct sk_buff *skb)
 {
 	struct hci_evt_le_ext_adv_set_term *ev = (void *) skb->data;
 	struct hci_conn *conn;
+	struct adv_info *adv;
 
 	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
 
-	if (ev->status) {
-		struct adv_info *adv;
+	adv = hci_find_adv_instance(hdev, ev->handle);
 
-		adv = hci_find_adv_instance(hdev, ev->handle);
+	if (ev->status) {
 		if (!adv)
 			return;
 
@@ -5336,11 +5429,18 @@ static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, struct sk_buff *skb)
 		return;
 	}
 
+	if (adv)
+		adv->enabled = false;
+
 	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle));
 	if (conn) {
-		struct adv_info *adv_instance;
+		/* Store handle in the connection so the correct advertising
+		 * instance can be re-enabled when disconnected.
+		 */
+		conn->adv_instance = ev->handle;
 
-		if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM)
+		if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM ||
+		    bacmp(&conn->resp_addr, BDADDR_ANY))
 			return;
 
 		if (!ev->handle) {
@@ -5348,9 +5448,8 @@ static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, struct sk_buff *skb)
 			return;
 		}
 
-		adv_instance = hci_find_adv_instance(hdev, ev->handle);
-		if (adv_instance)
-			bacpy(&conn->resp_addr, &adv_instance->random_addr);
+		if (adv)
+			bacpy(&conn->resp_addr, &adv->random_addr);
 	}
 }
 
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 1d14adc023e9..f15626607b2d 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -2072,8 +2072,6 @@ int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
 	 * current RPA has expired then generate a new one.
 	 */
 	if (use_rpa) {
-		int to;
-
 		/* If Controller supports LL Privacy use own address type is
 		 * 0x03
 		 */
@@ -2084,14 +2082,10 @@ int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
 			*own_addr_type = ADDR_LE_DEV_RANDOM;
 
 		if (adv_instance) {
-			if (!adv_instance->rpa_expired &&
-			    !bacmp(&adv_instance->random_addr, &hdev->rpa))
+			if (adv_rpa_valid(adv_instance))
 				return 0;
-
-			adv_instance->rpa_expired = false;
 		} else {
-			if (!hci_dev_test_and_clear_flag(hdev, HCI_RPA_EXPIRED) &&
-			    !bacmp(&hdev->random_addr, &hdev->rpa))
+			if (rpa_valid(hdev))
 				return 0;
 		}
 
@@ -2103,14 +2097,6 @@ int hci_get_random_address(struct hci_dev *hdev, bool require_privacy,
 
 		bacpy(rand_addr, &hdev->rpa);
 
-		to = msecs_to_jiffies(hdev->rpa_timeout * 1000);
-		if (adv_instance)
-			queue_delayed_work(hdev->workqueue,
-					   &adv_instance->rpa_expired_cb, to);
-		else
-			queue_delayed_work(hdev->workqueue,
-					   &hdev->rpa_expired, to);
-
 		return 0;
 	}
 
@@ -2153,6 +2139,30 @@ void __hci_req_clear_ext_adv_sets(struct hci_request *req)
 	hci_req_add(req, HCI_OP_LE_CLEAR_ADV_SETS, 0, NULL);
 }
 
+static void set_random_addr(struct hci_request *req, bdaddr_t *rpa)
+{
+	struct hci_dev *hdev = req->hdev;
+
+	/* If we're advertising or initiating an LE connection we can't
+	 * go ahead and change the random address at this time. This is
+	 * because the eventual initiator address used for the
+	 * subsequently created connection will be undefined (some
+	 * controllers use the new address and others the one we had
+	 * when the operation started).
+	 *
+	 * In this kind of scenario skip the update and let the random
+	 * address be updated at the next cycle.
+	 */
+	if (hci_dev_test_flag(hdev, HCI_LE_ADV) ||
+	    hci_lookup_le_connect(hdev)) {
+		bt_dev_dbg(hdev, "Deferring random address update");
+		hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
+		return;
+	}
+
+	hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, rpa);
+}
+
 int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance)
 {
 	struct hci_cp_le_set_ext_adv_params cp;
@@ -2255,6 +2265,13 @@ int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance)
 		} else {
 			if (!bacmp(&random_addr, &hdev->random_addr))
 				return 0;
+			/* Instance 0x00 doesn't have an adv_info, instead it
+			 * uses hdev->random_addr to track its address so
+			 * whenever it needs to be updated this also set the
+			 * random address since hdev->random_addr is shared with
+			 * scan state machine.
+			 */
+			set_random_addr(req, &random_addr);
 		}
 
 		memset(&cp, 0, sizeof(cp));
@@ -2512,30 +2529,6 @@ void hci_req_clear_adv_instance(struct hci_dev *hdev, struct sock *sk,
 						false);
 }
 
-static void set_random_addr(struct hci_request *req, bdaddr_t *rpa)
-{
-	struct hci_dev *hdev = req->hdev;
-
-	/* If we're advertising or initiating an LE connection we can't
-	 * go ahead and change the random address at this time. This is
-	 * because the eventual initiator address used for the
-	 * subsequently created connection will be undefined (some
-	 * controllers use the new address and others the one we had
-	 * when the operation started).
-	 *
-	 * In this kind of scenario skip the update and let the random
-	 * address be updated at the next cycle.
-	 */
-	if (hci_dev_test_flag(hdev, HCI_LE_ADV) ||
-	    hci_lookup_le_connect(hdev)) {
-		bt_dev_dbg(hdev, "Deferring random address update");
-		hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
-		return;
-	}
-
-	hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, rpa);
-}
-
 int hci_update_random_address(struct hci_request *req, bool require_privacy,
 			      bool use_rpa, u8 *own_addr_type)
 {
@@ -2547,8 +2540,6 @@ int hci_update_random_address(struct hci_request *req, bool require_privacy,
 	 * the current RPA in use, then generate a new one.
 	 */
 	if (use_rpa) {
-		int to;
-
 		/* If Controller supports LL Privacy use own address type is
 		 * 0x03
 		 */
@@ -2558,8 +2549,7 @@ int hci_update_random_address(struct hci_request *req, bool require_privacy,
 		else
 			*own_addr_type = ADDR_LE_DEV_RANDOM;
 
-		if (!hci_dev_test_and_clear_flag(hdev, HCI_RPA_EXPIRED) &&
-		    !bacmp(&hdev->random_addr, &hdev->rpa))
+		if (rpa_valid(hdev))
 			return 0;
 
 		err = smp_generate_rpa(hdev, hdev->irk, &hdev->rpa);
@@ -2570,9 +2560,6 @@ int hci_update_random_address(struct hci_request *req, bool require_privacy,
 
 		set_random_addr(req, &hdev->rpa);
 
-		to = msecs_to_jiffies(hdev->rpa_timeout * 1000);
-		queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, to);
-
 		return 0;
 	}
 
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index b69d88b88d2e..7827639ecf5c 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -85,8 +85,7 @@ static void bt_host_release(struct device *dev)
 	struct hci_dev *hdev = to_hci_dev(dev);
 
 	if (hci_dev_test_flag(hdev, HCI_UNREGISTER))
-		hci_cleanup_dev(hdev);
-	kfree(hdev);
+		hci_release_dev(hdev);
 	module_put(THIS_MODULE);
 }
 
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 3663f880df11..cea01e275f1e 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -7204,7 +7204,7 @@ static void read_local_oob_ext_data_complete(struct hci_dev *hdev, u8 status,
 	if (!mgmt_rp)
 		goto done;
 
-	if (status)
+	if (eir_len == 0)
 		goto send_rsp;
 
 	eir_len = eir_append_data(mgmt_rp->eir, 0, EIR_CLASS_OF_DEV,
@@ -7725,7 +7725,7 @@ static int add_advertising(struct sock *sk, struct hci_dev *hdev,
 	 * advertising.
 	 */
 	if (hci_dev_test_flag(hdev, HCI_ENABLE_LL_PRIVACY))
-		return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING,
+		return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING,
 				       MGMT_STATUS_NOT_SUPPORTED);
 
 	if (cp->instance < 1 || cp->instance > hdev->le_num_of_adv_sets)
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index ae6f80730561..2c95bb58f901 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -70,7 +70,7 @@ static void rfcomm_sk_state_change(struct rfcomm_dlc *d, int err)
 
 	BT_DBG("dlc %p state %ld err %d", d, d->state, err);
 
-	spin_lock_bh(&sk->sk_lock.slock);
+	lock_sock(sk);
 
 	if (err)
 		sk->sk_err = err;
@@ -91,7 +91,7 @@ static void rfcomm_sk_state_change(struct rfcomm_dlc *d, int err)
 		sk->sk_state_change(sk);
 	}
 
-	spin_unlock_bh(&sk->sk_lock.slock);
+	release_sock(sk);
 
 	if (parent && sock_flag(sk, SOCK_ZAPPED)) {
 		/* We have to drop DLC lock here, otherwise
@@ -974,7 +974,7 @@ int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc *
 	if (!parent)
 		return 0;
 
-	bh_lock_sock(parent);
+	lock_sock(parent);
 
 	/* Check for backlog size */
 	if (sk_acceptq_is_full(parent)) {
@@ -1001,7 +1001,7 @@ int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc *
 	result = 1;
 
 done:
-	bh_unlock_sock(parent);
+	release_sock(parent);
 
 	if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags))
 		parent->sk_state_change(parent);
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index d9a4e88dacbb..98a881586512 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -48,6 +48,8 @@ struct sco_conn {
 	spinlock_t	lock;
 	struct sock	*sk;
 
+	struct delayed_work	timeout_work;
+
 	unsigned int    mtu;
 };
 
@@ -74,31 +76,47 @@ struct sco_pinfo {
 #define SCO_CONN_TIMEOUT	(HZ * 40)
 #define SCO_DISCONN_TIMEOUT	(HZ * 2)
 
-static void sco_sock_timeout(struct timer_list *t)
+static void sco_sock_timeout(struct work_struct *work)
 {
-	struct sock *sk = from_timer(sk, t, sk_timer);
+	struct sco_conn *conn = container_of(work, struct sco_conn,
+					     timeout_work.work);
+	struct sock *sk;
+
+	sco_conn_lock(conn);
+	sk = conn->sk;
+	if (sk)
+		sock_hold(sk);
+	sco_conn_unlock(conn);
+
+	if (!sk)
+		return;
 
 	BT_DBG("sock %p state %d", sk, sk->sk_state);
 
-	bh_lock_sock(sk);
+	lock_sock(sk);
 	sk->sk_err = ETIMEDOUT;
 	sk->sk_state_change(sk);
-	bh_unlock_sock(sk);
-
-	sco_sock_kill(sk);
+	release_sock(sk);
 	sock_put(sk);
 }
 
 static void sco_sock_set_timer(struct sock *sk, long timeout)
 {
+	if (!sco_pi(sk)->conn)
+		return;
+
 	BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout);
-	sk_reset_timer(sk, &sk->sk_timer, jiffies + timeout);
+	cancel_delayed_work(&sco_pi(sk)->conn->timeout_work);
+	schedule_delayed_work(&sco_pi(sk)->conn->timeout_work, timeout);
 }
 
 static void sco_sock_clear_timer(struct sock *sk)
 {
+	if (!sco_pi(sk)->conn)
+		return;
+
 	BT_DBG("sock %p state %d", sk, sk->sk_state);
-	sk_stop_timer(sk, &sk->sk_timer);
+	cancel_delayed_work(&sco_pi(sk)->conn->timeout_work);
 }
 
 /* ---- SCO connections ---- */
@@ -173,12 +191,14 @@ static void sco_conn_del(struct hci_conn *hcon, int err)
 
 	if (sk) {
 		sock_hold(sk);
-		bh_lock_sock(sk);
+		lock_sock(sk);
 		sco_sock_clear_timer(sk);
 		sco_chan_del(sk, err);
-		bh_unlock_sock(sk);
-		sco_sock_kill(sk);
+		release_sock(sk);
 		sock_put(sk);
+
+		/* Ensure no more work items will run before freeing conn. */
+		cancel_delayed_work_sync(&conn->timeout_work);
 	}
 
 	hcon->sco_data = NULL;
@@ -193,6 +213,8 @@ static void __sco_chan_add(struct sco_conn *conn, struct sock *sk,
 	sco_pi(sk)->conn = conn;
 	conn->sk = sk;
 
+	INIT_DELAYED_WORK(&conn->timeout_work, sco_sock_timeout);
+
 	if (parent)
 		bt_accept_enqueue(parent, sk, true);
 }
@@ -212,44 +234,32 @@ static int sco_chan_add(struct sco_conn *conn, struct sock *sk,
 	return err;
 }
 
-static int sco_connect(struct sock *sk)
+static int sco_connect(struct hci_dev *hdev, struct sock *sk)
 {
 	struct sco_conn *conn;
 	struct hci_conn *hcon;
-	struct hci_dev  *hdev;
 	int err, type;
 
 	BT_DBG("%pMR -> %pMR", &sco_pi(sk)->src, &sco_pi(sk)->dst);
 
-	hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, BDADDR_BREDR);
-	if (!hdev)
-		return -EHOSTUNREACH;
-
-	hci_dev_lock(hdev);
-
 	if (lmp_esco_capable(hdev) && !disable_esco)
 		type = ESCO_LINK;
 	else
 		type = SCO_LINK;
 
 	if (sco_pi(sk)->setting == BT_VOICE_TRANSPARENT &&
-	    (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev))) {
-		err = -EOPNOTSUPP;
-		goto done;
-	}
+	    (!lmp_transp_capable(hdev) || !lmp_esco_capable(hdev)))
+		return -EOPNOTSUPP;
 
 	hcon = hci_connect_sco(hdev, type, &sco_pi(sk)->dst,
 			       sco_pi(sk)->setting);
-	if (IS_ERR(hcon)) {
-		err = PTR_ERR(hcon);
-		goto done;
-	}
+	if (IS_ERR(hcon))
+		return PTR_ERR(hcon);
 
 	conn = sco_conn_add(hcon);
 	if (!conn) {
 		hci_conn_drop(hcon);
-		err = -ENOMEM;
-		goto done;
+		return -ENOMEM;
 	}
 
 	/* Update source addr of the socket */
@@ -257,7 +267,7 @@ static int sco_connect(struct sock *sk)
 
 	err = sco_chan_add(conn, sk, NULL);
 	if (err)
-		goto done;
+		return err;
 
 	if (hcon->state == BT_CONNECTED) {
 		sco_sock_clear_timer(sk);
@@ -267,9 +277,6 @@ static int sco_connect(struct sock *sk)
 		sco_sock_set_timer(sk, sk->sk_sndtimeo);
 	}
 
-done:
-	hci_dev_unlock(hdev);
-	hci_dev_put(hdev);
 	return err;
 }
 
@@ -394,8 +401,7 @@ static void sco_sock_cleanup_listen(struct sock *parent)
  */
 static void sco_sock_kill(struct sock *sk)
 {
-	if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket ||
-	    sock_flag(sk, SOCK_DEAD))
+	if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
 		return;
 
 	BT_DBG("sk %p state %d", sk, sk->sk_state);
@@ -443,11 +449,10 @@ static void __sco_sock_close(struct sock *sk)
 /* Must be called on unlocked socket. */
 static void sco_sock_close(struct sock *sk)
 {
-	sco_sock_clear_timer(sk);
 	lock_sock(sk);
+	sco_sock_clear_timer(sk);
 	__sco_sock_close(sk);
 	release_sock(sk);
-	sco_sock_kill(sk);
 }
 
 static void sco_skb_put_cmsg(struct sk_buff *skb, struct msghdr *msg,
@@ -500,8 +505,6 @@ static struct sock *sco_sock_alloc(struct net *net, struct socket *sock,
 
 	sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT;
 
-	timer_setup(&sk->sk_timer, sco_sock_timeout, 0);
-
 	bt_sock_link(&sco_sk_list, sk);
 	return sk;
 }
@@ -566,6 +569,7 @@ static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen
 {
 	struct sockaddr_sco *sa = (struct sockaddr_sco *) addr;
 	struct sock *sk = sock->sk;
+	struct hci_dev  *hdev;
 	int err;
 
 	BT_DBG("sk %p", sk);
@@ -580,12 +584,19 @@ static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen
 	if (sk->sk_type != SOCK_SEQPACKET)
 		return -EINVAL;
 
+	hdev = hci_get_route(&sa->sco_bdaddr, &sco_pi(sk)->src, BDADDR_BREDR);
+	if (!hdev)
+		return -EHOSTUNREACH;
+	hci_dev_lock(hdev);
+
 	lock_sock(sk);
 
 	/* Set destination address and psm */
 	bacpy(&sco_pi(sk)->dst, &sa->sco_bdaddr);
 
-	err = sco_connect(sk);
+	err = sco_connect(hdev, sk);
+	hci_dev_unlock(hdev);
+	hci_dev_put(hdev);
 	if (err)
 		goto done;
 
@@ -773,6 +784,11 @@ static void sco_conn_defer_accept(struct hci_conn *conn, u16 setting)
 			cp.max_latency = cpu_to_le16(0xffff);
 			cp.retrans_effort = 0xff;
 			break;
+		default:
+			/* use CVSD settings as fallback */
+			cp.max_latency = cpu_to_le16(0xffff);
+			cp.retrans_effort = 0xff;
+			break;
 		}
 
 		hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ,
@@ -1083,11 +1099,11 @@ static void sco_conn_ready(struct sco_conn *conn)
 	BT_DBG("conn %p", conn);
 
 	if (sk) {
+		lock_sock(sk);
 		sco_sock_clear_timer(sk);
-		bh_lock_sock(sk);
 		sk->sk_state = BT_CONNECTED;
 		sk->sk_state_change(sk);
-		bh_unlock_sock(sk);
+		release_sock(sk);
 	} else {
 		sco_conn_lock(conn);
 
@@ -1102,12 +1118,12 @@ static void sco_conn_ready(struct sco_conn *conn)
 			return;
 		}
 
-		bh_lock_sock(parent);
+		lock_sock(parent);
 
 		sk = sco_sock_alloc(sock_net(parent), NULL,
 				    BTPROTO_SCO, GFP_ATOMIC, 0);
 		if (!sk) {
-			bh_unlock_sock(parent);
+			release_sock(parent);
 			sco_conn_unlock(conn);
 			return;
 		}
@@ -1128,7 +1144,7 @@ static void sco_conn_ready(struct sco_conn *conn)
 		/* Wake up parent */
 		parent->sk_data_ready(parent);
 
-		bh_unlock_sock(parent);
+		release_sock(parent);
 
 		sco_conn_unlock(conn);
 	}