staging: wfx: simplify wfx_conf_tx()

{

	struct wfx_dev *wdev = hw->priv;

	struct wfx_vif *wvif = (struct wfx_vif *) vif->drv_priv;

	int ret = 0;

	struct hif_req_edca_queue_params *edca;

	mutex_lock(&wdev->conf_mutex);

	if (queue < hw->queues) {

		edca = &wvif->edca.params[queue];

	WARN_ON(queue >= hw->queues);

	mutex_lock(&wdev->conf_mutex);

	wvif->edca.uapsd_enable[queue] = params->uapsd;

	edca = &wvif->edca.params[queue];

	edca->aifsn = params->aifs;

	edca->cw_min = params->cw_min;

	edca->cw_max = params->cw_max;

	edca->tx_op_limit = params->txop * TXOP_UNIT;

	edca->allowed_medium_time = 0;

		ret = hif_set_edca_queue_params(wvif, edca);

		if (ret) {

			ret = -EINVAL;

			goto out;

		}

	hif_set_edca_queue_params(wvif, edca);

	if (wvif->vif->type == NL80211_IFTYPE_STATION) {

			ret = wfx_set_uapsd_param(wvif, &wvif->edca);

			if (!ret && wvif->setbssparams_done &&

			    wvif->state == WFX_STATE_STA)

				ret = wfx_update_pm(wvif);

		}

	} else {

		ret = -EINVAL;

		wfx_set_uapsd_param(wvif, &wvif->edca);

		if (wvif->setbssparams_done && wvif->state == WFX_STATE_STA)

			wfx_update_pm(wvif);

	}

out:

	mutex_unlock(&wdev->conf_mutex);

	return ret;

	return 0;

}

int wfx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)