linux-kernel - [PATCH] ath: move spin_lock_bh to spin

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Date:   Sat, 19 Jan 2019 18:55:30 +0800
From:   Zhiwei Jiang <qq282012236@...il.com>
To:     qq282012236@...il.com
Cc:     ath9k-devel@....qualcomm.com, kvalo@...eaurora.org,
        davem@...emloft.net, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ath: move spin_lock_bh to spin_lock in tasklet

as you are already in a tasklet, it is unnecessary to call
spin_lock_bh, because softirq already disable BH.

Signed-off-by: Zhiwei Jiang <qq282012236@...il.com>
---
 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
index 799010ed04e0..4e38276ed0d3 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
@@ -574,12 +574,12 @@ void ath9k_tx_failed_tasklet(unsigned long data)
 {
 	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *)data;
 
-	spin_lock_bh(&priv->tx.tx_lock);
+	spin_lock(&priv->tx.tx_lock);
 	if (priv->tx.flags & ATH9K_HTC_OP_TX_DRAIN) {
 		spin_unlock_bh(&priv->tx.tx_lock);
 		return;
 	}
-	spin_unlock_bh(&priv->tx.tx_lock);
+	spin_unlock(&priv->tx.tx_lock);
 
 	ath9k_htc_tx_drainq(priv, &priv->tx.tx_failed);
 }
-- 
2.19.0