linux-kernel - [PATCH AUTOSEL 6.6 019/139] wifi: mt76: mt7915: disable tx worker during tx BA session enable/disable

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Message-ID: <20240925121137.1307574-19-sashal@kernel.org>
Date: Wed, 25 Sep 2024 08:07:19 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Felix Fietkau <nbd@....name>,
	Sasha Levin <sashal@...nel.org>,
	lorenzo@...nel.org,
	ryder.lee@...iatek.com,
	kvalo@...nel.org,
	matthias.bgg@...il.com,
	angelogioacchino.delregno@...labora.com,
	shayne.chen@...iatek.com,
	chui-hao.chiu@...iatek.com,
	meichia.chiu@...iatek.com,
	johannes.berg@...el.com,
	quic_adisi@...cinc.com,
	sean.wang@...iatek.com,
	linux-wireless@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: [PATCH AUTOSEL 6.6 019/139] wifi: mt76: mt7915: disable tx worker during tx BA session enable/disable

From: Felix Fietkau <nbd@....name>

[ Upstream commit 256cbd26fbafb30ba3314339106e5c594e9bd5f9 ]

Avoids firmware race condition.

Link: https://patch.msgid.link/20240827093011.18621-7-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@....name>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 272e55ef8e2d2..5fba103bfd65d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -688,13 +688,17 @@ int mt7915_mcu_add_tx_ba(struct mt7915_dev *dev,
 {
 	struct mt7915_sta *msta = (struct mt7915_sta *)params->sta->drv_priv;
 	struct mt7915_vif *mvif = msta->vif;
+	int ret;
 
+	mt76_worker_disable(&dev->mt76.tx_worker);
 	if (enable && !params->amsdu)
 		msta->wcid.amsdu = false;
+	ret = mt76_connac_mcu_sta_ba(&dev->mt76, &mvif->mt76, params,
+				     MCU_EXT_CMD(STA_REC_UPDATE),
+				     enable, true);
+	mt76_worker_enable(&dev->mt76.tx_worker);
 
-	return mt76_connac_mcu_sta_ba(&dev->mt76, &mvif->mt76, params,
-				      MCU_EXT_CMD(STA_REC_UPDATE),
-				      enable, true);
+	return ret;
 }
 
 int mt7915_mcu_add_rx_ba(struct mt7915_dev *dev,
-- 
2.43.0