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

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Message-ID: <20250710204032.650152-11-rosenp@gmail.com>
Date: Thu, 10 Jul 2025 13:40:31 -0700
From: Rosen Penev <rosenp@...il.com>
To: netdev@...r.kernel.org
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 a93244415274..bc1d7c4bd1a7 100644
--- a/drivers/net/ethernet/freescale/gianfar.c
+++ b/drivers/net/ethernet/freescale/gianfar.c
@@ -413,8 +413,8 @@ 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;
 
@@ -431,8 +431,8 @@ 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;
 
@@ -442,22 +442,6 @@ 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;
@@ -678,16 +662,16 @@ 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 */
@@ -796,10 +780,6 @@ 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;
 }
 
@@ -3308,8 +3288,6 @@ 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;
@@ -3327,8 +3305,6 @@ 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
-- 
2.50.0