diff options
| author | Jingoo Han <jg1.han@samsung.com> | 2014-02-12 14:17:08 +0900 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2014-02-27 05:56:50 +0800 |
| commit | bfaff75b09c42d8fc57b020034e836fe9048f8b1 (patch) | |
| tree | 84ece2a5e06170aef541be849c06b708bed6ac3a /drivers/char/hw_random/atmel-rng.c | |
| parent | 0fdefe2c907610f3efb3163c8b72127007e282aa (diff) | |
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 <jg1.han@samsung.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/char/hw_random/atmel-rng.c')
| -rw-r--r-- | drivers/char/hw_random/atmel-rng.c | 15 |
1 files changed, 4 insertions, 11 deletions
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)) |