iwlwifi: pass txq to wake/stop queue

Instead of passing the txq->swq_id, pass the
txq struct directly to make sure that in the
future nobody will pass an invalid number.
Only three places actually change from using
the txq_id or the skb's queue_mapping to now
using txq->swq_id as well.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index 2ba83b5..eef90b5 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -446,7 +446,7 @@
 			if (priv->mac80211_registered &&
 			    (iwl_queue_space(&txq->q) > txq->q.low_mark) &&
 			    (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA))
-				iwl_wake_queue(priv, txq->swq_id);
+				iwl_wake_queue(priv, txq);
 		}
 	} else {
 		BUG_ON(txq_id != txq->swq_id);
@@ -456,7 +456,7 @@
 
 		if (priv->mac80211_registered &&
 		    (iwl_queue_space(&txq->q) > txq->q.low_mark))
-			iwl_wake_queue(priv, txq_id);
+			iwl_wake_queue(priv, txq);
 	}
 
 	iwlagn_txq_check_empty(priv, sta_id, tid, txq_id);