staging: fsl-dpaa2/ethsw: do not force user to bring interface down

			 const struct ethtool_link_ksettings *link_ksettings)

{

	struct ethsw_port_priv *port_priv = netdev_priv(netdev);

	struct ethsw_core *ethsw = port_priv->ethsw_data;

	struct dpsw_link_cfg cfg = {0};

	int err = 0;

	/* Due to a temporary MC limitation, the DPSW port must be down

	 * in order to be able to change link settings. Taking steps to let

	 * the user know that.

	 */

	if (netif_running(netdev)) {

		netdev_info(netdev, "Sorry, interface must be brought down first.\n");

		return -EACCES;

	bool if_running;

	int err = 0, ret;

	/* Interface needs to be down to change link settings */

	if_running = netif_running(netdev);

	if (if_running) {

		err = dpsw_if_disable(ethsw->mc_io, 0,

				      ethsw->dpsw_handle,

				      port_priv->idx);

		if (err) {

			netdev_err(netdev, "dpsw_if_disable err %d\n", err);

			return err;

		}

	}

	cfg.rate = link_ksettings->base.speed;

				   port_priv->idx,

				   &cfg);

	if (if_running) {

		ret = dpsw_if_enable(ethsw->mc_io, 0,

				     ethsw->dpsw_handle,

				     port_priv->idx);

		if (ret) {

			netdev_err(netdev, "dpsw_if_enable err %d\n", ret);

			return ret;

		}

	}

	return err;

}