linux-kernel - [PATCH 2/9] mt76: remove unnecessary annotations

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Date:   Sat, 11 Apr 2020 01:19:26 +0100
From:   Jules Irenge <jbi.octave@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     boqun.feng@...il.com, Felix Fietkau <nbd@....name>,
        Lorenzo Bianconi <lorenzo.bianconi83@...il.com>,
        Ryder Lee <ryder.lee@...iatek.com>,
        Roy Luo <royluo@...gle.com>, Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-wireless@...r.kernel.org (open list:MEDIATEK MT76 WIRELESS LAN
        DRIVER), netdev@...r.kernel.org (open list:NETWORKING DRIVERS),
        linux-arm-kernel@...ts.infradead.org (moderated list:ARM/Mediatek SoC
        support),
        linux-mediatek@...ts.infradead.org (moderated list:ARM/Mediatek SoC
        support)
Subject: [PATCH 2/9]  mt76: remove unnecessary annotations

Sparse report warnings at mt76_tx_status_unlock() and mt76_tx_status_lock()

warning: context imbalance in mt76_tx_status_lock() - wrong count at exit
warning: context imbalance in mt76_tx_status_unlock() - unexpected unlock

The root cause is the additional __acquire(&dev->status_list.lock)
and __release(&dev->status_list.unlock) called
 from inside mt76_tx_status_lock() and mt76_tx_status_unlock().

Remove __acquire(&dev->status_list.lock) annotation
Remove __releases(&dev->status_list.unlock)
Correct &dev->status_list.unlock to &dev->status_list.lock
	-unlock not defined in the sk_buff_head struct

Signed-off-by: Jules Irenge <jbi.octave@...il.com>
---
 drivers/net/wireless/mediatek/mt76/tx.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/tx.c b/drivers/net/wireless/mediatek/mt76/tx.c
index 7ee91d946882..7581ba9c2e95 100644
--- a/drivers/net/wireless/mediatek/mt76/tx.c
+++ b/drivers/net/wireless/mediatek/mt76/tx.c
@@ -101,18 +101,16 @@ mt76_tx_status_lock(struct mt76_dev *dev, struct sk_buff_head *list)
 {
 	__skb_queue_head_init(list);
 	spin_lock_bh(&dev->status_list.lock);
-	__acquire(&dev->status_list.lock);
 }
 EXPORT_SYMBOL_GPL(mt76_tx_status_lock);
 
 void
 mt76_tx_status_unlock(struct mt76_dev *dev, struct sk_buff_head *list)
-		      __releases(&dev->status_list.unlock)
+		      __releases(&dev->status_list.lock)
 {
 	struct sk_buff *skb;
 
 	spin_unlock_bh(&dev->status_list.lock);
-	__release(&dev->status_list.unlock);
 
 	while ((skb = __skb_dequeue(list)) != NULL)
 		ieee80211_tx_status(dev->hw, skb);
-- 
2.24.1