linux-kernel - [PATCH v2 1/2] net: phy: mscc-miim: Use devm_platform_ioremap_resource() in mscc_miim

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Message-ID: <90c7a71f-d39a-2615-eedb-cc2d1150f3b3@web.de>
Date:   Fri, 27 Sep 2019 10:16:56 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     netdev@...r.kernel.org,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Heiner Kallweit <hkallweit1@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH v2 1/2] net: phy: mscc-miim: Use
 devm_platform_ioremap_resource() in mscc_miim_probe()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Fri, 27 Sep 2019 09:24:03 +0200

Simplify this function implementation a bit by using
a known wrapper function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---

v2:
Alexandre Belloni pointed the need for adjustments out.
https://lore.kernel.org/r/20190926193239.GC6825@piout.net/

* The mapping of internal phy registers should be treated as optional.
* An other prefix would be preferred in the commit subject.


 drivers/net/phy/mdio-mscc-miim.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/net/phy/mdio-mscc-miim.c b/drivers/net/phy/mdio-mscc-miim.c
index badbc99bedd3..aabb13982251 100644
--- a/drivers/net/phy/mdio-mscc-miim.c
+++ b/drivers/net/phy/mdio-mscc-miim.c
@@ -120,10 +120,6 @@ static int mscc_miim_probe(struct platform_device *pdev)
 	struct mscc_miim_dev *dev;
 	int ret;

-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -ENODEV;
-
 	bus = devm_mdiobus_alloc_size(&pdev->dev, sizeof(*dev));
 	if (!bus)
 		return -ENOMEM;
@@ -136,7 +132,7 @@ static int mscc_miim_probe(struct platform_device *pdev)
 	bus->parent = &pdev->dev;

 	dev = bus->priv;
-	dev->regs = devm_ioremap_resource(&pdev->dev, res);
+	dev->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(dev->regs)) {
 		dev_err(&pdev->dev, "Unable to map MIIM registers\n");
 		return PTR_ERR(dev->regs);
--
2.23.0