linux-kernel - [PATCH net-next 12/13] net: ibm: emac: mal: use devm for kzalloc

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Message-ID: <20240930180036.87598-13-rosenp@gmail.com>
Date: Mon, 30 Sep 2024 11:00:35 -0700
From: Rosen Penev <rosenp@...il.com>
To: netdev@...r.kernel.org
Cc: andrew@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	linux-kernel@...r.kernel.org,
	jacob.e.keller@...el.com,
	horms@...nel.org,
	sd@...asysnail.net,
	chunkeey@...il.com
Subject: [PATCH net-next 12/13] 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 | 28 ++++++++++------------------
 1 file changed, 10 insertions(+), 18 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/mal.c b/drivers/net/ethernet/ibm/emac/mal.c
index a632d3a207d3..70019ced47ff 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")) {
@@ -577,8 +574,7 @@ static int mal_probe(struct platform_device *ofdev)
 #else
 		printk(KERN_ERR "%pOF: Support for 405EZ not enabled!\n",
 				ofdev->dev.of_node);
-		err = -ENODEV;
-		goto fail;
+		return -ENODEV;
 #endif
 	}
 
@@ -711,9 +707,6 @@ 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;
 }
 
@@ -744,10 +737,9 @@ 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[] =
-- 
2.46.2