Bluetooth: btintel: Set quirk for non-persistent diagnostic settings

For Intel controllers the diagnostics settings are not persistent over
HCI Reset. So set the quirk to programm them again on every power up.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

drivers/bluetooth/btintel.c

@@ -97,9 +97,6 @@ int btintel_set_diag(struct hci_dev *hdev, bool enable)
 	u8 param[3];
 	int err;
 
-	if (!test_bit(HCI_RUNNING, &hdev->flags))
-		return -ENETDOWN;
-
 	if (enable) {
 		param[0] = 0x03;
 		param[1] = 0x03;
@@ -113,6 +110,8 @@ int btintel_set_diag(struct hci_dev *hdev, bool enable)
 	skb = __hci_cmd_sync(hdev, 0xfc43, 3, param, HCI_INIT_TIMEOUT);
 	if (IS_ERR(skb)) {
 		err = PTR_ERR(skb);
+		if (err == -ENODATA)
+			return 0;
 		BT_ERR("%s: Changing Intel diagnostic mode failed (%d)",
 		       hdev->name, err);
 		return err;

drivers/bluetooth/btusb.c

@@ -2894,6 +2894,7 @@ static int btusb_probe(struct usb_interface *intf,
 		hdev->set_diag = btintel_set_diag;
 		hdev->set_bdaddr = btintel_set_bdaddr;
 		set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
+		set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
 	}
 
 	if (id->driver_info & BTUSB_MARVELL)