linux-kernel - [PATCH 5.19 243/717] wifi: mt76: mt7615: add mt7615_mutex_acquire/release in mt7615_sta_set_decap

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Date:   Sat, 22 Oct 2022 09:22:02 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Lorenzo Bianconi <lorenzo@...nel.org>,
        Felix Fietkau <nbd@....name>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.19 243/717] wifi: mt76: mt7615: add mt7615_mutex_acquire/release in mt7615_sta_set_decap_offload

From: Lorenzo Bianconi <lorenzo@...nel.org>

[ Upstream commit 765c69d477a44c088e5d19e7758dfa4db418e3ba ]

Similar to mt7921 driver, introduce mt7615_mutex_acquire/release in
mt7615_sta_set_decap_offload in order to avoid sending mcu commands
while the device is in low-power state.

Fixes: d4b98c63d7a77 ("mt76: mt7615: add support for rx decapsulation offload")
Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
Signed-off-by: Felix Fietkau <nbd@....name>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/mediatek/mt76/mt7615/main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/main.c b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
index d722c3c177be..4a1e6b92ff73 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
@@ -1194,12 +1194,16 @@ static void mt7615_sta_set_decap_offload(struct ieee80211_hw *hw,
 	struct mt7615_dev *dev = mt7615_hw_dev(hw);
 	struct mt7615_sta *msta = (struct mt7615_sta *)sta->drv_priv;
 
+	mt7615_mutex_acquire(dev);
+
 	if (enabled)
 		set_bit(MT_WCID_FLAG_HDR_TRANS, &msta->wcid.flags);
 	else
 		clear_bit(MT_WCID_FLAG_HDR_TRANS, &msta->wcid.flags);
 
 	mt7615_mcu_set_sta_decap_offload(dev, vif, sta);
+
+	mt7615_mutex_release(dev);
 }
 
 #ifdef CONFIG_PM
-- 
2.35.1