linux-kernel - [PATCH net-next 10/12] net: ibm: emac: mal: use devm for kzalloc

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Message-ID: <20241030203727.6039-11-rosenp@gmail.com>
Date: Wed, 30 Oct 2024 13:37:25 -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 10/12] net: ibm: emac: mal: use devm for kzalloc

Simplifies the probe function by removing gotos.

Signed-off-by: Rosen Penev <rosenp@...il.com>
---
 drivers/net/ethernet/ibm/emac/mal.c | 25 +++++++++----------------
 1 file changed, 9 insertions(+), 16 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/mal.c b/drivers/net/ethernet/ibm/emac/mal.c
index c634534710d9..f1f5e805ebba 100644
--- a/drivers/net/ethernet/ibm/emac/mal.c
+++ b/drivers/net/ethernet/ibm/emac/mal.c
@@ -524,7 +524,8 @@ static int mal_probe(struct platform_device *ofdev)
 	unsigned long irqflags;
 	irq_handler_t hdlr_serr, hdlr_txde, hdlr_rxde;
 
-	mal = kzalloc(sizeof(struct mal_instance), GFP_KERNEL);
+	mal = devm_kzalloc(&ofdev->dev, sizeof(struct mal_instance),
+			   GFP_KERNEL);
 	if (!mal)
 		return -ENOMEM;
 
@@ -539,8 +540,7 @@ static int mal_probe(struct platform_device *ofdev)
 		printk(KERN_ERR
 		       "mal%d: can't find MAL num-tx-chans property!\n",
 		       index);
-		err = -ENODEV;
-		goto fail;
+		return -ENODEV;
 	}
 	mal->num_tx_chans = prop[0];
 
@@ -549,8 +549,7 @@ static int mal_probe(struct platform_device *ofdev)
 		printk(KERN_ERR
 		       "mal%d: can't find MAL num-rx-chans property!\n",
 		       index);
-		err = -ENODEV;
-		goto fail;
+		return -ENODEV;
 	}
 	mal->num_rx_chans = prop[0];
 
@@ -558,15 +557,13 @@ static int mal_probe(struct platform_device *ofdev)
 	if (dcr_base == 0) {
 		printk(KERN_ERR
 		       "mal%d: can't find DCR resource!\n", index);
-		err = -ENODEV;
-		goto fail;
+		return -ENODEV;
 	}
 	mal->dcr_host = dcr_map(ofdev->dev.of_node, dcr_base, 0x100);
 	if (!DCR_MAP_OK(mal->dcr_host)) {
 		printk(KERN_ERR
 		       "mal%d: failed to map DCRs !\n", index);
-		err = -ENODEV;
-		goto fail;
+		return -ENODEV;
 	}
 
 	if (of_device_is_compatible(ofdev->dev.of_node, "ibm,mcmal-405ez")) {
@@ -711,9 +708,6 @@ static int mal_probe(struct platform_device *ofdev)
 	free_netdev(mal->dummy_dev);
  fail_unmap:
 	dcr_unmap(mal->dcr_host, 0x100);
- fail:
-	kfree(mal);
-
 	return err;
 }
 
@@ -746,10 +740,9 @@ static void mal_remove(struct platform_device *ofdev)
 
 	dma_free_coherent(&ofdev->dev,
 			  sizeof(struct mal_descriptor) *
-			  (NUM_TX_BUFF * mal->num_tx_chans +
-			   NUM_RX_BUFF * mal->num_rx_chans), mal->bd_virt,
-			  mal->bd_dma);
-	kfree(mal);
+				  (NUM_TX_BUFF * mal->num_tx_chans +
+				   NUM_RX_BUFF * mal->num_rx_chans),
+			  mal->bd_virt, mal->bd_dma);
 }
 
 static const struct of_device_id mal_platform_match[] =
-- 
2.47.0