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hwrng: nomadik - Use devm_*() functions

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Use devm_*() functions to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Jingoo Han 2014-02-27 14:06:31 +09:00 committed by Herbert Xu
parent 0c0aa84464
commit 1655c24095
1 changed files with 4 additions and 9 deletions
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13
drivers/char/hw_random/nomadik-rng.c
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@ -44,7 +44,7 @@ static int nmk_rng_probe(struct amba_device *dev, const struct amba_id *id)
void __iomem *base;
int ret;
rng_clk = clk_get(&dev->dev, NULL);
rng_clk = devm_clk_get(&dev->dev, NULL);
if (IS_ERR(rng_clk)) {
dev_err(&dev->dev, "could not get rng clock\n");
ret = PTR_ERR(rng_clk);
@ -57,33 +57,28 @@ static int nmk_rng_probe(struct amba_device *dev, const struct amba_id *id)
if (ret)
goto out_clk;
ret = -ENOMEM;
base = ioremap(dev->res.start, resource_size(&dev->res));
base = devm_ioremap(&dev->dev, dev->res.start,
resource_size(&dev->res));
if (!base)
goto out_release;
nmk_rng.priv = (unsigned long)base;
ret = hwrng_register(&nmk_rng);
if (ret)
goto out_unmap;
goto out_release;
return 0;
out_unmap:
iounmap(base);
out_release:
amba_release_regions(dev);
out_clk:
clk_disable(rng_clk);
clk_put(rng_clk);
return ret;
}
static int nmk_rng_remove(struct amba_device *dev)
{
void __iomem *base = (void __iomem *)nmk_rng.priv;
hwrng_unregister(&nmk_rng);
iounmap(base);
amba_release_regions(dev);
clk_disable(rng_clk);
clk_put(rng_clk);
return 0;
}