From 305023510f13afae8a0cb8118eb53c6056764781 Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Sat, 19 Jun 2021 20:19:58 +0200
Subject: [PATCH] mt76: mt7921: avoid unnecessary spin_lock/spin_unlock in
mt7921_mcu_tx_done_event
Git-commit: 305023510f13afae8a0cb8118eb53c6056764781
References: git-fixes
Patch-mainline: v5.16-rc1
Do not grab the spinlock in mt7921_mcu_tx_done_event routine if not
necessary.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
drivers/net/wireless/mediatek/mt76/mt7921/mcu.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
index 68840e55ede7..f32b672f9c3e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
@@ -534,9 +534,7 @@ mt7921_mcu_tx_done_event(struct mt7921_dev *dev, struct sk_buff *skb)
mt7921_mcu_tx_rate_parse(mphy->mt76, &peer,
&msta->stats.tx_rate,
le16_to_cpu(event->tx_rate));
-
- spin_lock_bh(&dev->sta_poll_lock);
- break;
+ return;
}
spin_unlock_bh(&dev->sta_poll_lock);
}
--
2.39.0