linux-kernel - [PATCH net-next 2/5] net: fsl_pq_mdio: use devm for mdiobus_alloc

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Message-ID: <20241115204149.6887-3-rosenp@gmail.com>
Date: Fri, 15 Nov 2024 12:41:46 -0800
From: Rosen Penev <rosenp@...il.com>
To: netdev@...r.kernel.org
Cc: Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH net-next 2/5] net: fsl_pq_mdio: use devm for mdiobus_alloc_size

Using devm avoids having to manually free. In the case of this driver,
it's simple enough that it's ideal for devm.

There also seems to be a mistake here. Using kfree instead of
mdiobus_free.

Signed-off-by: Rosen Penev <rosenp@...il.com>
---
 drivers/net/ethernet/freescale/fsl_pq_mdio.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fsl_pq_mdio.c b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
index 108e760c7a5f..d7f9d99fe782 100644
--- a/drivers/net/ethernet/freescale/fsl_pq_mdio.c
+++ b/drivers/net/ethernet/freescale/fsl_pq_mdio.c
@@ -423,7 +423,7 @@ static int fsl_pq_mdio_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	new_bus = mdiobus_alloc_size(sizeof(*priv));
+	new_bus = devm_mdiobus_alloc_size(dev, sizeof(*priv));
 	if (!new_bus)
 		return -ENOMEM;
 
@@ -437,17 +437,15 @@ static int fsl_pq_mdio_probe(struct platform_device *pdev)
 	err = of_address_to_resource(np, 0, &res);
 	if (err < 0) {
 		dev_err(dev, "could not obtain address information\n");
-		goto error;
+		return err;
 	}
 
 	snprintf(new_bus->id, MII_BUS_ID_SIZE, "%pOFn@...x", np,
 		 (unsigned long long)res.start);
 
 	priv->map = of_iomap(np, 0);
-	if (!priv->map) {
-		err = -ENOMEM;
-		goto error;
-	}
+	if (!priv->map)
+		return -ENOMEM;
 
 	/*
 	 * Some device tree nodes represent only the MII registers, and
@@ -502,8 +500,6 @@ static int fsl_pq_mdio_probe(struct platform_device *pdev)
 	if (priv->map)
 		iounmap(priv->map);
 
-	kfree(new_bus);
-
 	return err;
 }
 
@@ -517,7 +513,6 @@ static void fsl_pq_mdio_remove(struct platform_device *pdev)
 	mdiobus_unregister(bus);
 
 	iounmap(priv->map);
-	mdiobus_free(bus);
 }
 
 static struct platform_driver fsl_pq_mdio_driver = {
-- 
2.47.0