From: Lorenzo Bianconi lorenzo@kernel.org
[ Upstream commit a081de174d11b12db9a94eb748041c2732f14c10 ]
Initialize wcid to global_wcid if msta is NULL in mt7615_pm_wake_work routine since wcid will be dereferenced running mt76_tx()
Fixes: 2b8cdfb28d340 ("mt76: mt7615: wake device before pushing frames in mt7615_tx") Signed-off-by: Lorenzo Bianconi lorenzo@kernel.org Signed-off-by: Felix Fietkau nbd@nbd.name Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/mediatek/mt76/mt7615/mac.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c index 3dd8dd28690ed..2be127018df6a 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c @@ -1853,12 +1853,13 @@ void mt7615_pm_wake_work(struct work_struct *work) spin_lock_bh(&dev->pm.txq_lock); for (i = 0; i < IEEE80211_NUM_ACS; i++) { struct mt7615_sta *msta = dev->pm.tx_q[i].msta; - struct mt76_wcid *wcid = msta ? &msta->wcid : NULL; struct ieee80211_sta *sta = NULL; + struct mt76_wcid *wcid;
if (!dev->pm.tx_q[i].skb) continue;
+ wcid = msta ? &msta->wcid : &dev->mt76.global_wcid; if (msta && wcid->sta) sta = container_of((void *)msta, struct ieee80211_sta, drv_priv);