diff mbox series

[06/10] wifi: mt76: mt7996: fix potential memory leakage when reading chip temperature

Message ID 20240320110918.3488-6-shayne.chen@mediatek.com (mailing list archive)
State Accepted
Delegated to: Felix Fietkau
Headers show
Series [01/10] wifi: mt76: connac: use peer address for station BMC entry | expand

Commit Message

Shayne Chen March 20, 2024, 11:09 a.m. UTC 
From: Howard Hsu <howard-yh.hsu@mediatek.com>

Without this commit, reading chip temperature will cause memory leakage.

Fixes: 6879b2e94172 ("wifi: mt76: mt7996: add thermal sensor device support")
Reported-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Howard Hsu <howard-yh.hsu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
---
 drivers/net/wireless/mediatek/mt76/mt7996/mcu.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
index c4eefc593a40..d5e35f6dd52e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
@@ -3750,6 +3750,7 @@  int mt7996_mcu_get_temperature(struct mt7996_phy *phy)
 	} __packed * res;
 	struct sk_buff *skb;
 	int ret;
+	u32 temp;
 
 	ret = mt76_mcu_send_and_get_msg(&phy->dev->mt76, MCU_WM_UNI_CMD(THERMAL),
 					&req, sizeof(req), true, &skb);
@@ -3757,8 +3758,10 @@  int mt7996_mcu_get_temperature(struct mt7996_phy *phy)
 		return ret;
 
 	res = (void *)skb->data;
+	temp = le32_to_cpu(res->temperature);
+	dev_kfree_skb(skb);
 
-	return le32_to_cpu(res->temperature);
+	return temp;
 }
 
 int mt7996_mcu_set_thermal_throttling(struct mt7996_phy *phy, u8 state)