mmc: sdhci-pltfm: use devm_request_mem_region()

Use the managed variant of request_mem_region().
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-pltfm.c

@@ -152,7 +152,8 @@ struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
 		goto err_request;
 	}
 
-	if (!request_mem_region(iomem->start, resource_size(iomem),
+	if (!devm_request_mem_region(&pdev->dev, iomem->start,
+				     resource_size(iomem),
 				     mmc_hostname(host->mmc))) {
 		dev_err(&pdev->dev, "cannot request region\n");
 		ret = -EBUSY;
@@ -163,7 +164,7 @@ struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
 	if (!host->ioaddr) {
 		dev_err(&pdev->dev, "failed to remap registers\n");
 		ret = -ENOMEM;
-		goto err_remap;
+		goto err_request;
 	}
 
 	/*
@@ -177,8 +178,6 @@ struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
 
 	return host;
 
-err_remap:
-	release_mem_region(iomem->start, resource_size(iomem));
 err_request:
 	sdhci_free_host(host);
 err:
@@ -190,10 +189,8 @@ EXPORT_SYMBOL_GPL(sdhci_pltfm_init);
 void sdhci_pltfm_free(struct platform_device *pdev)
 {
 	struct sdhci_host *host = platform_get_drvdata(pdev);
-	struct resource *iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
 	iounmap(host->ioaddr);
-	release_mem_region(iomem->start, resource_size(iomem));
 	sdhci_free_host(host);
 }
 EXPORT_SYMBOL_GPL(sdhci_pltfm_free);