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hwrng: mxc-rnga - Use devm_ioremap_resource()
Using devm_ioremap_resource() can make the code cleaner and simpler. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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cb7d5662d7
commit
264878e6a7
@ -142,7 +142,7 @@ static void mxc_rnga_cleanup(struct hwrng *rng)
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static int __init mxc_rnga_probe(struct platform_device *pdev)
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{
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int err = -ENODEV;
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struct resource *res, *mem;
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struct resource *res;
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struct mxc_rng *mxc_rng;
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mxc_rng = devm_kzalloc(&pdev->dev, sizeof(struct mxc_rng),
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@ -172,15 +172,9 @@ static int __init mxc_rnga_probe(struct platform_device *pdev)
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goto err_region;
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}
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mem = request_mem_region(res->start, resource_size(res), pdev->name);
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if (mem == NULL) {
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err = -EBUSY;
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goto err_region;
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}
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mxc_rng->mem = ioremap(res->start, resource_size(res));
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if (!mxc_rng->mem) {
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err = -ENOMEM;
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mxc_rng->mem = devm_ioremap_resource(&pdev->dev, res);
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if (IS_ERR(mxc_rng->mem)) {
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err = PTR_ERR(mxc_rng->mem);
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goto err_ioremap;
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}
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@ -195,8 +189,6 @@ static int __init mxc_rnga_probe(struct platform_device *pdev)
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return 0;
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err_ioremap:
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release_mem_region(res->start, resource_size(res));
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err_region:
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clk_disable_unprepare(mxc_rng->clk);
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@ -206,15 +198,10 @@ out:
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static int __exit mxc_rnga_remove(struct platform_device *pdev)
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{
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struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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struct mxc_rng *mxc_rng = platform_get_drvdata(pdev);
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hwrng_unregister(&mxc_rng->rng);
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iounmap(mxc_rng->mem);
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release_mem_region(res->start, resource_size(res));
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clk_disable_unprepare(mxc_rng->clk);
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return 0;
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