Bluetooth: mgmt: Clear EIR data when disabling SSP

EIR shouldn't be enabled if SSP isn't enabled. This patch adds the
clearing of EIR data when disabling SSP and restores the data when SSP
is re-enabled.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>

net/bluetooth/mgmt.c

@@ -3250,6 +3250,18 @@ int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status)
 	return err;
 }
 
+static int clear_eir(struct hci_dev *hdev)
+{
+	struct hci_cp_write_eir cp;
+
+	if (!(hdev->features[6] & LMP_EXT_INQ))
+		return 0;
+
+	memset(&cp, 0, sizeof(cp));
+
+	return hci_send_cmd(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
+}
+
 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 status)
 {
 	struct cmd_lookup match = { NULL, hdev };
@@ -3268,9 +3280,15 @@ int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 status)
 	ev = cpu_to_le32(get_current_settings(hdev));
 	err = mgmt_event(MGMT_EV_NEW_SETTINGS, hdev, &ev, sizeof(ev), match.sk);
 
-	if (match.sk)
+	if (match.sk) {
 		sock_put(match.sk);
 
+		if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags))
+			update_eir(hdev);
+		else
+			clear_eir(hdev);
+	}
+
 	return err;
 }