linux-kernel - [PATCH net-next 10/11] net: gianfar: alloc queues with devm

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Message-ID: <20241202212331.7238-11-rosenp@gmail.com>
Date: Mon,  2 Dec 2024 13:23:30 -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>,
	Claudiu Manoil <claudiu.manoil@....com>,
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH net-next 10/11] net: gianfar: alloc queues with devm

Remove the freeing functions as they no longer serve a purpose. devm
handles this automatically.

There seems to be a mistake here where free_tx_queue is called on
failure. Just let devm deal with it.

Signed-off-by: Rosen Penev <rosenp@...il.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@...tlin.com>
---
 drivers/net/ethernet/freescale/gianfar.c | 38 +++++-------------------
 1 file changed, 7 insertions(+), 31 deletions(-)

diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c
index 4799779c9cbe..f333ceb11e47 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -412,8 +412,8 @@ static int gfar_alloc_tx_queues(struct gfar_private *priv)
 	int i;
 
 	for (i = 0; i < priv->num_tx_queues; i++) {
-		priv->tx_queue[i] = kzalloc(sizeof(struct gfar_priv_tx_q),
-					    GFP_KERNEL);
+		priv->tx_queue[i] = devm_kzalloc(
+			priv->dev, sizeof(struct gfar_priv_tx_q), GFP_KERNEL);
 		if (!priv->tx_queue[i])
 			return -ENOMEM;
 
@@ -430,8 +430,8 @@ static int gfar_alloc_rx_queues(struct gfar_private *priv)
 	int i;
 
 	for (i = 0; i < priv->num_rx_queues; i++) {
-		priv->rx_queue[i] = kzalloc(sizeof(struct gfar_priv_rx_q),
-					    GFP_KERNEL);
+		priv->rx_queue[i] = devm_kzalloc(
+			priv->dev, sizeof(struct gfar_priv_rx_q), GFP_KERNEL);
 		if (!priv->rx_queue[i])
 			return -ENOMEM;
 
@@ -441,22 +441,6 @@ static int gfar_alloc_rx_queues(struct gfar_private *priv)
 	return 0;
 }
 
-static void gfar_free_tx_queues(struct gfar_private *priv)
-{
-	int i;
-
-	for (i = 0; i < priv->num_tx_queues; i++)
-		kfree(priv->tx_queue[i]);
-}
-
-static void gfar_free_rx_queues(struct gfar_private *priv)
-{
-	int i;
-
-	for (i = 0; i < priv->num_rx_queues; i++)
-		kfree(priv->rx_queue[i]);
-}
-
 static void unmap_group_regs(struct gfar_private *priv)
 {
 	int i;
@@ -687,16 +671,16 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev)
 
 	err = gfar_alloc_tx_queues(priv);
 	if (err)
-		goto tx_alloc_failed;
+		return err;
 
 	err = gfar_alloc_rx_queues(priv);
 	if (err)
-		goto rx_alloc_failed;
+		return err;
 
 	err = of_property_read_string(np, "model", &model);
 	if (err) {
 		pr_err("Device model property missing, aborting\n");
-		goto rx_alloc_failed;
+		return err;
 	}
 
 	/* Init Rx queue filer rule set linked list */
@@ -805,10 +789,6 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev)
 
 err_grp_init:
 	unmap_group_regs(priv);
-rx_alloc_failed:
-	gfar_free_rx_queues(priv);
-tx_alloc_failed:
-	gfar_free_tx_queues(priv);
 	return err;
 }
 
@@ -3348,8 +3328,6 @@ static int gfar_probe(struct platform_device *ofdev)
 	if (of_phy_is_fixed_link(np))
 		of_phy_deregister_fixed_link(np);
 	unmap_group_regs(priv);
-	gfar_free_rx_queues(priv);
-	gfar_free_tx_queues(priv);
 	of_node_put(priv->phy_node);
 	of_node_put(priv->tbi_node);
 	return err;
@@ -3367,8 +3345,6 @@ static void gfar_remove(struct platform_device *ofdev)
 		of_phy_deregister_fixed_link(np);
 
 	unmap_group_regs(priv);
-	gfar_free_rx_queues(priv);
-	gfar_free_tx_queues(priv);
 }
 
 #ifdef CONFIG_PM
-- 
2.47.0