linux-kernel - [PATCH v2] ethernet: gemini: Use devm_platform_ioremap_resource() in gemini_ethernet

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Message-ID: <bd860b05-f493-20e6-083d-66ef3cb61f60@web.de>
Date:   Fri, 20 Sep 2019 11:23:05 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        "David S. Miller" <davem@...emloft.net>,
        Hans Ulli Kroll <ulli.kroll@...glemail.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Radhey Shyam Pandey <radheys@...inx.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH v2] ethernet: gemini: Use devm_platform_ioremap_resource() in
 gemini_ethernet_probe()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Fri, 20 Sep 2019 10:52:56 +0200

Simplify this function implementation by using the wrapper function
“devm_platform_ioremap_resource” instead of calling the functions
“platform_get_resource” and “devm_ioremap_resource” directly.

* Thus reduce also a bit of exception handling code here.
* Delete the local variable “res”.

This issue was detected by using the Coccinelle software.

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

v2:
Further changes were requested by Radhey Shyam Pandey.

https://lore.kernel.org/r/CH2PR02MB700047AFFFE08FE5FD563541C78E0@CH2PR02MB7000.namprd02.prod.outlook.com/



* Updates for three modules were split into
 a separate patch for each driver.
* The commit description was adjusted.



 drivers/net/ethernet/cortina/gemini.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/cortina/gemini.c b/drivers/net/ethernet/cortina/gemini.c
index e736ce2c58ca..f009415ee4d8 100644
--- a/drivers/net/ethernet/cortina/gemini.c
+++ b/drivers/net/ethernet/cortina/gemini.c
@@ -2549,17 +2549,13 @@ static int gemini_ethernet_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct gemini_ethernet *geth;
 	unsigned int retry = 5;
-	struct resource *res;
 	u32 val;

 	/* Global registers */
 	geth = devm_kzalloc(dev, sizeof(*geth), GFP_KERNEL);
 	if (!geth)
 		return -ENOMEM;
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -ENODEV;
-	geth->base = devm_ioremap_resource(dev, res);
+	geth->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(geth->base))
 		return PTR_ERR(geth->base);
 	geth->dev = dev;
--
2.23.0