Bluetooth: Store Bluetooth address from controller setup

During the setup phase of a controller, the Bluetooth address will be
read and to have that original address available for later use, store
it as setup address.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

include/net/bluetooth/hci_core.h

@@ -171,6 +171,7 @@ struct hci_dev {
 	__u8		bus;
 	__u8		dev_type;
 	bdaddr_t	bdaddr;
+	bdaddr_t	setup_addr;
 	bdaddr_t	public_addr;
 	bdaddr_t	random_addr;
 	bdaddr_t	static_addr;

net/bluetooth/hci_event.c

@@ -645,8 +645,14 @@ static void hci_cc_read_bd_addr(struct hci_dev *hdev, struct sk_buff *skb)
 
 	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
 
-	if (!rp->status)
+	if (rp->status)
+		return;
+
+	if (test_bit(HCI_INIT, &hdev->flags))
 		bacpy(&hdev->bdaddr, &rp->bdaddr);
+
+	if (test_bit(HCI_SETUP, &hdev->dev_flags))
+		bacpy(&hdev->setup_addr, &rp->bdaddr);
 }
 
 static void hci_cc_read_page_scan_activity(struct hci_dev *hdev,