From: <sean.wang@mediatek.com>
To: <nbd@nbd.name>, <lorenzo.bianconi@redhat.com>
Cc: <sean.wang@mediatek.com>, <Soul.Huang@mediatek.com>,
<YN.Chen@mediatek.com>, <Leon.Yen@mediatek.com>,
<Eric-SY.Chang@mediatek.com>, <Deren.Wu@mediatek.com>,
<km.lin@mediatek.com>, <jenhao.yang@mediatek.com>,
<robin.chiu@mediatek.com>, <Eddie.Chen@mediatek.com>,
<ch.yeh@mediatek.com>, <posh.sun@mediatek.com>,
<ted.huang@mediatek.com>, <Stella.Chang@mediatek.com>,
<Tom.Chou@mediatek.com>, <steve.lee@mediatek.com>,
<jsiuda@google.com>, <frankgor@google.com>, <kuabhs@google.com>,
<druth@google.com>, <abhishekpandit@google.com>,
<shawnku@google.com>, <linux-wireless@vger.kernel.org>,
<linux-mediatek@lists.infradead.org>
Subject: [PATCH RESEND v2 2/2] mt76: mt7921: add mt7921_mutex_acquire at mt7921_sta_set_decap_offload
Date: Fri, 29 Jul 2022 22:44:57 +0800 [thread overview]
Message-ID: <aa6418271cc601dd25a165d05cfd7136a1d6930a.1659105379.git.objelf@gmail.com> (raw)
In-Reply-To: <6353fe62ebeb0f78aa34b40e9c1745061b229f6c.1659105379.git.objelf@gmail.com>
From: Sean Wang <sean.wang@mediatek.com>
Add mt7921_mutex_acquire at mt7921_[start, stop]_ap to fix the race
with the context holding dev->muxtex and the driver might access the
device in low power state.
Fixes: 24299fc869f7 ("mt76: mt7921: enable rx header traslation offload")
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
drivers/net/wireless/mediatek/mt76/mt7921/main.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
index 63fd33dcd3af..7214735011d0 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
@@ -1404,6 +1404,8 @@ static void mt7921_sta_set_decap_offload(struct ieee80211_hw *hw,
struct mt7921_sta *msta = (struct mt7921_sta *)sta->drv_priv;
struct mt7921_dev *dev = mt7921_hw_dev(hw);
+ mt7921_mutex_acquire(dev);
+
if (enabled)
set_bit(MT_WCID_FLAG_HDR_TRANS, &msta->wcid.flags);
else
@@ -1411,6 +1413,8 @@ static void mt7921_sta_set_decap_offload(struct ieee80211_hw *hw,
mt76_connac_mcu_sta_update_hdr_trans(&dev->mt76, vif, &msta->wcid,
MCU_UNI_CMD(STA_REC_UPDATE));
+
+ mt7921_mutex_release(dev);
}
#if IS_ENABLED(CONFIG_IPV6)
--
2.25.1
next prev parent reply other threads:[~2022-07-29 14:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-29 14:44 [PATCH RESEND v2 1/2] mt76: mt7921: add mt7921_mutex_acquire at mt7921_[start, stop]_ap sean.wang
2022-07-29 14:44 ` sean.wang [this message]
2022-07-29 17:26 ` Lorenzo Bianconi
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