linux-kernel - [PATCH net-next 01/12] net: ibm: emac: tah: use devm for kzalloc

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Message-ID: <20241030203727.6039-2-rosenp@gmail.com>
Date: Wed, 30 Oct 2024 13:37:16 -0700
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>,
	Rosen Penev <rosenp@...il.com>,
	Breno Leitao <leitao@...ian.org>,
	Uwe Kleine-König <u.kleine-koenig@...libre.com>,
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH net-next 01/12] net: ibm: emac: tah: use devm for kzalloc

Simplifies the probe function by removing gotos.

Signed-off-by: Rosen Penev <rosenp@...il.com>
---
 drivers/net/ethernet/ibm/emac/tah.c | 21 ++++++---------------
 1 file changed, 6 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/tah.c b/drivers/net/ethernet/ibm/emac/tah.c
index c605c8ff933e..267c23ec15d7 100644
--- a/drivers/net/ethernet/ibm/emac/tah.c
+++ b/drivers/net/ethernet/ibm/emac/tah.c
@@ -90,28 +90,25 @@ static int tah_probe(struct platform_device *ofdev)
 	struct device_node *np = ofdev->dev.of_node;
 	struct tah_instance *dev;
 	struct resource regs;
-	int rc;
 
-	rc = -ENOMEM;
-	dev = kzalloc(sizeof(struct tah_instance), GFP_KERNEL);
-	if (dev == NULL)
-		goto err_gone;
+	dev = devm_kzalloc(&ofdev->dev, sizeof(struct tah_instance),
+			   GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
 
 	mutex_init(&dev->lock);
 	dev->ofdev = ofdev;
 
-	rc = -ENXIO;
 	if (of_address_to_resource(np, 0, &regs)) {
 		printk(KERN_ERR "%pOF: Can't get registers address\n", np);
-		goto err_free;
+		return -ENXIO;
 	}
 
-	rc = -ENOMEM;
 	dev->base = (struct tah_regs __iomem *)ioremap(regs.start,
 					       sizeof(struct tah_regs));
 	if (dev->base == NULL) {
 		printk(KERN_ERR "%pOF: Can't map device registers!\n", np);
-		goto err_free;
+		return -ENOMEM;
 	}
 
 	platform_set_drvdata(ofdev, dev);
@@ -123,11 +120,6 @@ static int tah_probe(struct platform_device *ofdev)
 	wmb();
 
 	return 0;
-
- err_free:
-	kfree(dev);
- err_gone:
-	return rc;
 }
 
 static void tah_remove(struct platform_device *ofdev)
@@ -137,7 +129,6 @@ static void tah_remove(struct platform_device *ofdev)
 	WARN_ON(dev->users != 0);
 
 	iounmap(dev->base);
-	kfree(dev);
 }
 
 static const struct of_device_id tah_match[] =
-- 
2.47.0