linux-kernel - [PATCH 3/6] net: ibm: emac: use devm for of

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Message-ID: <20240902181530.6852-4-rosenp@gmail.com>
Date: Mon,  2 Sep 2024 11:15:12 -0700
From: Rosen Penev <rosenp@...il.com>
To: netdev@...r.kernel.org
Cc: 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 3/6] net: ibm: emac: use devm for of_iomap

Allows removing manual iounmap.

Signed-off-by: Rosen Penev <rosenp@...il.com>
---
 drivers/net/ethernet/ibm/emac/core.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/core.c b/drivers/net/ethernet/ibm/emac/core.c
index 98d1b711969b..1a4c9fd87663 100644
--- a/drivers/net/ethernet/ibm/emac/core.c
+++ b/drivers/net/ethernet/ibm/emac/core.c
@@ -3082,10 +3082,9 @@ static int emac_probe(struct platform_device *ofdev)
 
 	/* Map EMAC regs */
 	// TODO : platform_get_resource() and devm_ioremap_resource()
-	dev->emacp = of_iomap(np, 0);
-	if (dev->emacp == NULL) {
-		printk(KERN_ERR "%pOF: Can't map device registers!\n", np);
-		err = -ENOMEM;
+	dev->emacp = devm_of_iomap(&ofdev->dev, np, 0, NULL);
+	if (!dev->emacp) {
+		err = dev_err_probe(&ofdev->dev, -ENOMEM, "can't map device registers");
 		goto err_irq_unmap;
 	}
 
@@ -3095,7 +3094,7 @@ static int emac_probe(struct platform_device *ofdev)
 		printk(KERN_ERR
 		       "%pOF: Timeout waiting for dependent devices\n", np);
 		/*  display more info about what's missing ? */
-		goto err_reg_unmap;
+		goto err_irq_unmap;
 	}
 	dev->mal = platform_get_drvdata(dev->mal_dev);
 	if (dev->mdio_dev != NULL)
@@ -3228,8 +3227,6 @@ static int emac_probe(struct platform_device *ofdev)
 	mal_unregister_commac(dev->mal, &dev->commac);
  err_rel_deps:
 	emac_put_deps(dev);
- err_reg_unmap:
-	iounmap(dev->emacp);
  err_irq_unmap:
 	if (dev->wol_irq)
 		irq_dispose_mapping(dev->wol_irq);
@@ -3274,8 +3271,6 @@ static void emac_remove(struct platform_device *ofdev)
 	mal_unregister_commac(dev->mal, &dev->commac);
 	emac_put_deps(dev);
 
-	iounmap(dev->emacp);
-
 	if (dev->wol_irq)
 		irq_dispose_mapping(dev->wol_irq);
 }
-- 
2.46.0