hwrng: iproc-rng200 - Use devm_platform_ioremap_resource() in iproc_rng200_probe()

Simplify this function implementation by using a known wrapper function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/char/hw_random/iproc-rng200.c b/drivers/char/hw_random/iproc-rng200.c
index 92be1c0ab99f345130ad87b1395094452565b13b..899ff25f4f2837afc96f5754e776843a75e93042 100644 (file)
--- a/drivers/char/hw_random/iproc-rng200.c
+++ b/drivers/char/hw_random/iproc-rng200.c
@@ -181,7 +181,6 @@ static void iproc_rng200_cleanup(struct hwrng *rng)
 static int iproc_rng200_probe(struct platform_device *pdev)
 {
        struct iproc_rng200_dev *priv;
-       struct resource *res;
        struct device *dev = &pdev->dev;
        int ret;
 
@@ -190,13 +189,7 @@ static int iproc_rng200_probe(struct platform_device *pdev)
                return -ENOMEM;
 
        /* Map peripheral */
-       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       if (!res) {
-               dev_err(dev, "failed to get rng resources\n");
-               return -EINVAL;
-       }
-
-       priv->base = devm_ioremap_resource(dev, res);
+       priv->base = devm_platform_ioremap_resource(pdev, 0);
        if (IS_ERR(priv->base)) {
                dev_err(dev, "failed to remap rng regs\n");
                return PTR_ERR(priv->base);