net: phylink: allow ethtool -A to change flow control advertisement

	    !pause->autoneg && pause->rx_pause != pause->tx_pause)

		return -EINVAL;

	mutex_lock(&pl->state_mutex);

	config->pause = 0;

	if (pause->autoneg)

		config->pause |= MLO_PAUSE_AN;

	if (pause->tx_pause)

		config->pause |= MLO_PAUSE_TX;

	/*

	 * See the comments for linkmode_set_pause(), wrt the deficiencies

	 * with the current implementation.  A solution to this issue would

	 * be:

	 * ethtool  Local device

	 *  rx  tx  Pause AsymDir

	 *  0   0   0     0

	 *  1   0   1     1

	 *  0   1   0     1

	 *  1   1   1     1

	 * and then use the ethtool rx/tx enablement status to mask the

	 * rx/tx pause resolution.

	 */

	linkmode_set_pause(config->advertising, pause->tx_pause,

			   pause->rx_pause);

	/* If we have a PHY, phylib will call our link state function if the

	 * mode has changed, which will trigger a resolve and update the MAC

	 * configuration.

		phylink_mac_config(pl, &pl->link_config);

		phylink_mac_an_restart(pl);

	}

	mutex_unlock(&pl->state_mutex);

	return 0;

}