libertas: misc power saving adjusts

* firmware for the CF card supports power saving
* the driver currenly only accept "iwconfig ethX power on|off", so
  I fixed what the range wext ioctl reports.
* initialize value/flags in lbs_get_power()
* get rid of unused parameter psmode in lbs_ps_confirm_sleep()
* some minor debug output tweaks

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/wext.c b/drivers/net/wireless/libertas/wext.c
index 5ccb4e0..c039db6 100644
--- a/drivers/net/wireless/libertas/wext.c
+++ b/drivers/net/wireless/libertas/wext.c
@@ -656,13 +656,10 @@
 	range->num_encoding_sizes = 2;
 	range->max_encoding_tokens = 4;
 
-	range->min_pmp = 1000000;
-	range->max_pmp = 120000000;
-	range->min_pmt = 1000;
-	range->max_pmt = 1000000;
-	range->pmp_flags = IW_POWER_PERIOD;
-	range->pmt_flags = IW_POWER_TIMEOUT;
-	range->pm_capa = IW_POWER_PERIOD | IW_POWER_TIMEOUT | IW_POWER_ALL_R;
+	/*
+	 * Right now we support only "iwconfig ethX power on|off"
+	 */
+	range->pm_capa = IW_POWER_ON;
 
 	/*
 	 * Minimum version we recommend
@@ -784,21 +781,14 @@
 			  struct iw_param *vwrq, char *extra)
 {
 	struct lbs_private *priv = dev->priv;
-	int mode;
 
 	lbs_deb_enter(LBS_DEB_WEXT);
 
-	mode = priv->psmode;
-
-	if ((vwrq->disabled = (mode == LBS802_11POWERMODECAM))
-	    || priv->connect_status == LBS_DISCONNECTED)
-	{
-		goto out;
-	}
-
 	vwrq->value = 0;
+	vwrq->flags = 0;
+	vwrq->disabled = priv->psmode == LBS802_11POWERMODECAM
+		|| priv->connect_status == LBS_DISCONNECTED;
 
-out:
 	lbs_deb_leave(LBS_DEB_WEXT);
 	return 0;
 }