linux-kernel - [PATCH net v4] net: phy: Fix missing of_node

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Message-ID: <20240830022025.610844-1-ruanjinjie@huawei.com>
Date: Fri, 30 Aug 2024 10:20:25 +0800
From: Jinjie Ruan <ruanjinjie@...wei.com>
To: <andrew@...n.ch>, <hkallweit1@...il.com>, <linux@...linux.org.uk>,
	<davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
	<pabeni@...hat.com>, <f.fainelli@...il.com>, <ansuelsmth@...il.com>,
	<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: <ruanjinjie@...wei.com>
Subject: [PATCH net v4] net: phy: Fix missing of_node_put() for leds

The call of of_get_child_by_name() will cause refcount incremented
for leds, if it succeeds, it should call of_node_put() to decrease
it, fix it.

Fixes: 01e5b728e9e4 ("net: phy: Add a binding for PHY LEDs")
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@...wei.com>
---
v4:
- Split out for net fix branch.
- Signed-off-by: should always be last.
v3:
- Add Reviewed-by.
v2:
- Split into 2 patches.
- Use of_node_put() rather than __free() to fix it.
---
 drivers/net/phy/phy_device.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 8f5314c1fecc..243dae686992 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -3424,11 +3424,13 @@ static int of_phy_leds(struct phy_device *phydev)
 		err = of_phy_led(phydev, led);
 		if (err) {
 			of_node_put(led);
+			of_node_put(leds);
 			phy_leds_unregister(phydev);
 			return err;
 		}
 	}
 
+	of_node_put(leds);
 	return 0;
 }
 
-- 
2.34.1