Bluetooth: Send management event for class of device changes

Currently there are no events to other management sockets if the class of
device got changed. So make sure they are sent.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

include/net/bluetooth/hci_core.h

@@ -1007,6 +1007,8 @@ int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 						u8 addr_type, u8 status);
 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
+int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
+								u8 status);
 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
 						u8 *randomizer, u8 status);

net/bluetooth/hci_event.c

@@ -350,14 +350,19 @@ static void hci_cc_write_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
 
 	BT_DBG("%s status 0x%x", hdev->name, status);
 
-	if (status)
-		return;
-
 	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
 	if (!sent)
 		return;
 
-	memcpy(hdev->dev_class, sent, 3);
+	hci_dev_lock(hdev);
+
+	if (status == 0)
+		memcpy(hdev->dev_class, sent, 3);
+
+	if (test_bit(HCI_MGMT, &hdev->dev_flags))
+		mgmt_set_class_of_dev_complete(hdev, sent, status);
+
+	hci_dev_unlock(hdev);
 }
 
 static void hci_cc_read_voice_setting(struct hci_dev *hdev, struct sk_buff *skb)

net/bluetooth/mgmt.c

@@ -3546,6 +3546,16 @@ int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status)
 	return err;
 }
 
+int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
+								u8 status)
+{
+	int err;
+
+	err = mgmt_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev, dev_class, 3, NULL);
+
+	return err;
+}
+
 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status)
 {
 	struct pending_cmd *cmd;