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wifi: mt76: mt7996: Check phy before init msta_link in mt7996_mac_sta_add_links()

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In order to avoid a possible NULL pointer dereference in
mt7996_mac_sta_init_link routine, move the phy pointer check before
running mt7996_mac_sta_init_link() in mt7996_mac_sta_add_links routine.

Fixes: dd82a9e02c ("wifi: mt76: mt7996: Rely on mt7996_sta_link in sta_add/sta_remove callbacks")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20250830-mt7996_mac_sta_add_links-fix-v1-1-4219fb8755ee@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi
2025-09-15 09:47:39 +02:00
committed by Felix Fietkau
parent afff432554
commit fe5fffadc6
1 changed files with 6 additions and 5 deletions
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drivers/net/wireless/mediatek/mt76/mt7996/main.c
+6 -5
View File
@@ -1076,16 +1076,17 @@ mt7996_mac_sta_add_links(struct mt7996_dev *dev, struct ieee80211_vif *vif,
goto error_unlink;
}
err = mt7996_mac_sta_init_link(dev, link_conf, link_sta, link,
link_id);
if (err)
goto error_unlink;
mphy = mt76_vif_link_phy(&link->mt76);
if (!mphy) {
err = -EINVAL;
goto error_unlink;
}
err = mt7996_mac_sta_init_link(dev, link_conf, link_sta, link,
link_id);
if (err)
goto error_unlink;
mphy->num_sta++;
}