linux-kernel - [PATCH -next] MIPS: OCTEON: octeon-usb: Use devm_platform_get_and_ioremap

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Message-ID: <20210605075537.2046896-1-yangyingliang@huawei.com>
Date:   Sat, 5 Jun 2021 15:55:37 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linux-kernel@...r.kernel.org>, <linux-mips@...r.kernel.org>
CC:     <tsbogend@...ha.franken.de>
Subject: [PATCH -next] MIPS: OCTEON: octeon-usb: Use devm_platform_get_and_ioremap_resource()

Remove unneeded error handling on the result of a call
to platform_get_resource() when the value is passed to
devm_ioremap_resource().

And use devm_platform_get_and_ioremap_resource() to simplify
code.

Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 arch/mips/cavium-octeon/octeon-usb.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/arch/mips/cavium-octeon/octeon-usb.c b/arch/mips/cavium-octeon/octeon-usb.c
index 950e6c6e8629..6e4d3619137a 100644
--- a/arch/mips/cavium-octeon/octeon-usb.c
+++ b/arch/mips/cavium-octeon/octeon-usb.c
@@ -516,20 +516,13 @@ static int __init dwc3_octeon_device_init(void)
 			if (!pdev)
 				return -ENODEV;
 
-			res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-			if (res == NULL) {
-				put_device(&pdev->dev);
-				dev_err(&pdev->dev, "No memory resources\n");
-				return -ENXIO;
-			}
-
 			/*
 			 * The code below maps in the registers necessary for
 			 * setting up the clocks and reseting PHYs. We must
 			 * release the resources so the dwc3 subsystem doesn't
 			 * know the difference.
 			 */
-			base = devm_ioremap_resource(&pdev->dev, res);
+			base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
 			if (IS_ERR(base)) {
 				put_device(&pdev->dev);
 				return PTR_ERR(base);
-- 
2.25.1