6.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Howard Hsu <howard-yh.hsu@xxxxxxxxxxxx>
[ Upstream commit 474b9412f33be87076b40a49756662594598a85e ]
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@xxxxxxxxxxxx>
Signed-off-by: Howard Hsu <howard-yh.hsu@xxxxxxxxxxxx>
Signed-off-by: Shayne Chen <shayne.chen@xxxxxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt7996/mcu.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
index cfb5a7d348eb8..e86c05d0eecc9 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
@@ -3729,6 +3729,7 @@ 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);
@@ -3736,8 +3737,10 @@ 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)
--
2.43.0
