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hwrng: omap - use devm_request_and_ioremap

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Using devm_request_and_ioremap is more concise.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Julia Lawall 2012-04-19 19:19:08 +02:00 committed by Herbert Xu
parent bdd3f7fa77
commit 945478a727
1 changed files with 2 additions and 20 deletions
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22
drivers/char/hw_random/omap-rng.c
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@ -113,22 +113,12 @@ static int __devinit omap_rng_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
ret = -ENOENT;
goto err_region;
}
if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
ret = -EBUSY;
goto err_region;
}
dev_set_drvdata(&pdev->dev, res);
rng_base = ioremap(res->start, resource_size(res));
rng_base = devm_request_and_ioremap(&pdev->dev, res);
if (!rng_base) {
ret = -ENOMEM;
goto err_ioremap;
}
dev_set_drvdata(&pdev->dev, res);
ret = hwrng_register(&omap_rng_ops);
if (ret)
@ -143,11 +133,8 @@ static int __devinit omap_rng_probe(struct platform_device *pdev)
return 0;
err_register:
iounmap(rng_base);
rng_base = NULL;
err_ioremap:
release_mem_region(res->start, resource_size(res));
err_region:
if (cpu_is_omap24xx()) {
clk_disable(rng_ick);
clk_put(rng_ick);
@ -157,20 +144,15 @@ err_region:
static int __exit omap_rng_remove(struct platform_device *pdev)
{
struct resource *res = dev_get_drvdata(&pdev->dev);
hwrng_unregister(&omap_rng_ops);
omap_rng_write_reg(RNG_MASK_REG, 0x0);
iounmap(rng_base);
if (cpu_is_omap24xx()) {
clk_disable(rng_ick);
clk_put(rng_ick);
}
release_mem_region(res->start, resource_size(res));
rng_base = NULL;
return 0;