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wifi: mt76: mt7996: avoid null deref in mt7996_stop_phy()

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In mt7996_stop_phy() the mt7996_phy structure is
dereferenced before the null sanity check which could
lead to a null deref.

Fix by moving the dereference operation after the
sanity check.

Fixes: 69d54ce749 ("wifi: mt76: mt7996: switch to single multi-radio wiphy")
Signed-off-by: Qasim Ijaz <qasdev00@gmail.com>
Link: https://patch.msgid.link/20250421111344.11484-1-qasdev00@gmail.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Qasim Ijaz
2025-04-21 12:13:44 +01:00
committed by Felix Fietkau
parent cb423ddad0
commit a0bdd3d1b9
1 changed files with 3 additions and 1 deletions
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4
drivers/net/wireless/mediatek/mt76/mt7996/main.c
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@@ -68,11 +68,13 @@ static int mt7996_start(struct ieee80211_hw *hw)
static void mt7996_stop_phy(struct mt7996_phy *phy)
{
struct mt7996_dev *dev = phy->dev;
struct mt7996_dev *dev;
if (!phy || !test_bit(MT76_STATE_RUNNING, &phy->mt76->state))
return;
dev = phy->dev;
cancel_delayed_work_sync(&phy->mt76->mac_work);
mutex_lock(&dev->mt76.mutex);