From bfaff75b09c42d8fc57b020034e836fe9048f8b1 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Wed, 12 Feb 2014 14:17:08 +0900 Subject: hwrng: atmel - Use devm_ioremap_resource() Use devm_ioremap_resource() in order to make the code simpler, and remove redundant return value check of platform_get_resource() because the value is checked by devm_ioremap_resource(). Signed-off-by: Jingoo Han Acked-by: Peter Korsgaard Acked-by: Nicolas Ferre Signed-off-by: Herbert Xu --- drivers/char/hw_random/atmel-rng.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/char/hw_random/atmel-rng.c b/drivers/char/hw_random/atmel-rng.c index bf9fc6b79328..dfeddf2c00b7 100644 --- a/drivers/char/hw_random/atmel-rng.c +++ b/drivers/char/hw_random/atmel-rng.c @@ -54,21 +54,14 @@ static int atmel_trng_probe(struct platform_device *pdev) struct resource *res; int ret; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -EINVAL; - trng = devm_kzalloc(&pdev->dev, sizeof(*trng), GFP_KERNEL); if (!trng) return -ENOMEM; - if (!devm_request_mem_region(&pdev->dev, res->start, - resource_size(res), pdev->name)) - return -EBUSY; - - trng->base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); - if (!trng->base) - return -EBUSY; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + trng->base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(trng->base)) + return PTR_ERR(trng->base); trng->clk = clk_get(&pdev->dev, NULL); if (IS_ERR(trng->clk)) -- cgit v1.2.3