From a670111131db75b53c6377f26b4ccf12fe3912c8 Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Thu, 22 Aug 2019 11:49:10 +0200
Subject: [PATCH] mt76: remove empty flag in mt76_txq_schedule_list
Git-commit: a670111131db75b53c6377f26b4ccf12fe3912c8
Patch-mainline: v5.5-rc1
References: jsc#SLE-13430

Remove empty flag in mt76_txq_schedule_list and mt76_txq_send_burst
since we just need retry_q length to notify mac80211 to reschedule the
current tx queue

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/wireless/mediatek/mt76/tx.c | 23 +++++++----------------
 1 file changed, 7 insertions(+), 16 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/tx.c b/drivers/net/wireless/mediatek/mt76/tx.c
index c22a05f06fd0..7ee91d946882 100644
--- a/drivers/net/wireless/mediatek/mt76/tx.c
+++ b/drivers/net/wireless/mediatek/mt76/tx.c
@@ -378,7 +378,7 @@ EXPORT_SYMBOL_GPL(mt76_release_buffered_frames);
 
 static int
 mt76_txq_send_burst(struct mt76_dev *dev, struct mt76_sw_queue *sq,
-		    struct mt76_txq *mtxq, bool *empty)
+		    struct mt76_txq *mtxq)
 {
 	struct ieee80211_txq *txq = mtxq_to_txq(mtxq);
 	enum mt76_txq_id qid = mt76_txq_get_qid(txq);
@@ -392,16 +392,12 @@ mt76_txq_send_burst(struct mt76_dev *dev, struct mt76_sw_queue *sq,
 	bool probe;
 	int idx;
 
-	if (test_bit(MT_WCID_FLAG_PS, &wcid->flags)) {
-		*empty = true;
+	if (test_bit(MT_WCID_FLAG_PS, &wcid->flags))
 		return 0;
-	}
 
 	skb = mt76_txq_dequeue(dev, mtxq, false);
-	if (!skb) {
-		*empty = true;
+	if (!skb)
 		return 0;
-	}
 
 	info = IEEE80211_SKB_CB(skb);
 	if (!(wcid->tx_info & MT_WCID_TX_INFO_SET))
@@ -431,10 +427,8 @@ mt76_txq_send_burst(struct mt76_dev *dev, struct mt76_sw_queue *sq,
 			return -EBUSY;
 
 		skb = mt76_txq_dequeue(dev, mtxq, false);
-		if (!skb) {
-			*empty = true;
+		if (!skb)
 			break;
-		}
 
 		info = IEEE80211_SKB_CB(skb);
 		cur_ampdu = info->flags & IEEE80211_TX_CTL_AMPDU;
@@ -481,8 +475,6 @@ mt76_txq_schedule_list(struct mt76_dev *dev, enum mt76_txq_id qid)
 
 	spin_lock_bh(&hwq->lock);
 	while (1) {
-		bool empty = false;
-
 		if (sq->swq_queued >= 4)
 			break;
 
@@ -513,10 +505,9 @@ mt76_txq_schedule_list(struct mt76_dev *dev, enum mt76_txq_id qid)
 			spin_lock_bh(&hwq->lock);
 		}
 
-		ret += mt76_txq_send_burst(dev, sq, mtxq, &empty);
-		if (skb_queue_empty(&mtxq->retry_q))
-			empty = true;
-		ieee80211_return_txq(dev->hw, txq, !empty);
+		ret += mt76_txq_send_burst(dev, sq, mtxq);
+		ieee80211_return_txq(dev->hw, txq,
+				     !skb_queue_empty(&mtxq->retry_q));
 	}
 	spin_unlock_bh(&hwq->lock);
 
-- 
2.16.4