linux-kernel - [PATCH 2/2] char: hw_random: mxc-rnga: use devm_platform_ioremap

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Date:   Wed, 17 Jul 2019 17:04:38 +0800
From:   Anson.Huang@....com
To:     mpm@...enic.com, herbert@...dor.apana.org.au, arnd@...db.de,
        gregkh@...uxfoundation.org, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        rfontana@...hat.com, allison@...utok.net,
        kstewart@...uxfoundation.org, tglx@...utronix.de,
        linux-crypto@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Linux-imx@....com
Subject: [PATCH 2/2] char: hw_random: mxc-rnga: use devm_platform_ioremap_resource() to simplify code

From: Anson Huang <Anson.Huang@....com>

Use the new helper devm_platform_ioremap_resource() which wraps the
platform_get_resource() and devm_ioremap_resource() together, to
simplify the code.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
 drivers/char/hw_random/mxc-rnga.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/char/hw_random/mxc-rnga.c b/drivers/char/hw_random/mxc-rnga.c
index ea2bf18..025083c 100644
--- a/drivers/char/hw_random/mxc-rnga.c
+++ b/drivers/char/hw_random/mxc-rnga.c
@@ -134,7 +134,6 @@ static void mxc_rnga_cleanup(struct hwrng *rng)
 static int __init mxc_rnga_probe(struct platform_device *pdev)
 {
 	int err;
-	struct resource *res;
 	struct mxc_rng *mxc_rng;
 
 	mxc_rng = devm_kzalloc(&pdev->dev, sizeof(*mxc_rng), GFP_KERNEL);
@@ -158,8 +157,7 @@ static int __init mxc_rnga_probe(struct platform_device *pdev)
 	if (err)
 		return err;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	mxc_rng->mem = devm_ioremap_resource(&pdev->dev, res);
+	mxc_rng->mem = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(mxc_rng->mem)) {
 		err = PTR_ERR(mxc_rng->mem);
 		goto err_ioremap;
-- 
2.7.4