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| author | Jingoo Han <jg1.han@samsung.com> | 2014-02-12 14:19:48 +0900 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2014-02-27 05:56:51 +0800 |
| commit | fb5d23e3e09d6c9719b783ac1955c085aca3d4ae (patch) | |
| tree | 03f0b9ec3f81602ae0cfd24f622539051eca9ef6 /drivers/char | |
| parent | bfaff75b09c42d8fc57b020034e836fe9048f8b1 (diff) | |
| download | linux-fb5d23e3e09d6c9719b783ac1955c085aca3d4ae.tar.gz linux-fb5d23e3e09d6c9719b783ac1955c085aca3d4ae.tar.bz2 linux-fb5d23e3e09d6c9719b783ac1955c085aca3d4ae.zip | |
hwrng: pixocell - 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>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/hw_random/picoxcell-rng.c | 19 |
1 files changed, 3 insertions, 16 deletions
diff --git a/drivers/char/hw_random/picoxcell-rng.c b/drivers/char/hw_random/picoxcell-rng.c index 3d4c2293c6f5..c03beeeb1aea 100644 --- a/drivers/char/hw_random/picoxcell-rng.c +++ b/drivers/char/hw_random/picoxcell-rng.c @@ -104,22 +104,9 @@ static int picoxcell_trng_probe(struct platform_device *pdev) int ret; struct resource *mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!mem) { - dev_warn(&pdev->dev, "no memory resource\n"); - return -ENOMEM; - } - - if (!devm_request_mem_region(&pdev->dev, mem->start, resource_size(mem), - "picoxcell_trng")) { - dev_warn(&pdev->dev, "unable to request io mem\n"); - return -EBUSY; - } - - rng_base = devm_ioremap(&pdev->dev, mem->start, resource_size(mem)); - if (!rng_base) { - dev_warn(&pdev->dev, "unable to remap io mem\n"); - return -ENOMEM; - } + rng_base = devm_ioremap_resource(&pdev->dev, mem); + if (IS_ERR(rng_base)) + return PTR_ERR(rng_base); rng_clk = clk_get(&pdev->dev, NULL); if (IS_ERR(rng_clk)) { |