[PATCH AUTOSEL 5.12 059/116] mt76: connac: always check return value from mt76_connac_mcu_alloc_wtbl_req

[Sasha Levin]

From: Lorenzo Bianconi <lorenzo at kernel.org>

[ Upstream commit baa3afb39e94965f4ca5b5d3d274379504b8fa24 ]

Even if this is not a real bug since mt76_connac_mcu_alloc_wtbl_req routine
can fails just if nskb is NULL , always check return value from
mt76_connac_mcu_alloc_wtbl_req in order to avoid possible future
mistake.

Reported-by: Dan Carpenter <dan.carpenter at oracle.com>
Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
Signed-off-by: Felix Fietkau <nbd at nbd.name>
Signed-off-by: Sasha Levin <sashal at kernel.org>
---
 drivers/net/wireless/mediatek/mt76/mt7615/mcu.c      | 3 +++
 drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
index 631596fc2f36..4ecbd5406e2a 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
@@ -1040,6 +1040,9 @@ mt7615_mcu_sta_ba(struct mt7615_dev *dev,
 
 	wtbl_hdr = mt76_connac_mcu_alloc_wtbl_req(&dev->mt76, &msta->wcid,
 						  WTBL_SET, sta_wtbl, &skb);
+	if (IS_ERR(wtbl_hdr))
+		return PTR_ERR(wtbl_hdr);
+
 	mt76_connac_mcu_wtbl_ba_tlv(&dev->mt76, skb, params, enable, tx,
 				    sta_wtbl, wtbl_hdr);
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
index 6cbccfb05f8b..cd92ff915da5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c
@@ -833,6 +833,9 @@ int mt76_connac_mcu_add_sta_cmd(struct mt76_phy *phy,
 	wtbl_hdr = mt76_connac_mcu_alloc_wtbl_req(dev, wcid,
 						  WTBL_RESET_AND_SET,
 						  sta_wtbl, &skb);
+	if (IS_ERR(wtbl_hdr))
+		return PTR_ERR(wtbl_hdr);
+
 	if (enable) {
 		mt76_connac_mcu_wtbl_generic_tlv(dev, skb, vif, sta, sta_wtbl,
 						 wtbl_hdr);
-- 
2.30.2