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

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Message-ID: <604a6376-0298-ebcd-ee84-435945370374@web.de>
Date:   Fri, 20 Sep 2019 13:30:35 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        "David S. Miller" <davem@...emloft.net>,
        Michal Simek <michals@...inx.com>,
        Radhey Shyam Pandey <radheys@...inx.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH v2] ethernet: axienet: Use devm_platform_ioremap_resource() in
 axienet_probe()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Fri, 20 Sep 2019 13:17:01 +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/xilinx/xilinx_axienet_main.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index 4fc627fb4d11..92783aaaa0a2 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -1787,14 +1787,7 @@ static int axienet_probe(struct platform_device *pdev)
 		of_node_put(np);
 		lp->eth_irq = platform_get_irq(pdev, 0);
 	} else {
-		/* Check for these resources directly on the Ethernet node. */
-		struct resource *res = platform_get_resource(pdev,
-							     IORESOURCE_MEM, 1);
-		if (!res) {
-			dev_err(&pdev->dev, "unable to get DMA memory resource\n");
-			goto free_netdev;
-		}
-		lp->dma_regs = devm_ioremap_resource(&pdev->dev, res);
+		lp->dma_regs = devm_platform_ioremap_resource(pdev, 1);
 		lp->rx_irq = platform_get_irq(pdev, 1);
 		lp->tx_irq = platform_get_irq(pdev, 0);
 		lp->eth_irq = platform_get_irq(pdev, 2);
--
2.23.0