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Commit 6ebaf8f2 authored by Viresh Kumar's avatar Viresh Kumar Committed by Chris Ball
Browse files

mmc: sdhci-spear: Use devm_* derivatives 



This patch replaces normal calls to resource allocation routines
with devm_*() derivative of those routines. This removes the need
to free those resources inside the driver.

Signed-off-by: default avatarViresh Kumar <viresh.kumar@st.com>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent 3524b5d1

drivers/mmc/host/sdhci-spear.c

+27 −53
Original line number Diff line number Diff line
@@ -82,18 +82,18 @@ static int __devinit sdhci_probe(struct platform_device *pdev) 
		goto err;

	}



	if (!request_mem_region(iomem->start, resource_size(iomem),

				"spear-sdhci")) {

	if (!devm_request_mem_region(&pdev->dev, iomem->start,

				resource_size(iomem), "spear-sdhci")) {

		ret = -EBUSY;

		dev_dbg(&pdev->dev, "cannot request region\n");

		goto err;

	}



	sdhci = kzalloc(sizeof(*sdhci), GFP_KERNEL);

	sdhci = devm_kzalloc(&pdev->dev, sizeof(*sdhci), GFP_KERNEL);

	if (!sdhci) {

		ret = -ENOMEM;

		dev_dbg(&pdev->dev, "cannot allocate memory for sdhci\n");

		goto err_kzalloc;

		goto err;

	}



	/* clk enable */
@@ -101,13 +101,13 @@ static int __devinit sdhci_probe(struct platform_device *pdev) 
	if (IS_ERR(sdhci->clk)) {

		ret = PTR_ERR(sdhci->clk);

		dev_dbg(&pdev->dev, "Error getting clock\n");

		goto err_clk_get;

		goto err;

	}



	ret = clk_enable(sdhci->clk);

	if (ret) {

		dev_dbg(&pdev->dev, "Error enabling clock\n");

		goto err_clk_enb;

		goto put_clk;

	}



	/* overwrite platform_data */
@@ -122,7 +122,7 @@ static int __devinit sdhci_probe(struct platform_device *pdev) 
	if (IS_ERR(host)) {

		ret = PTR_ERR(host);

		dev_dbg(&pdev->dev, "error allocating host\n");

		goto err_alloc_host;

		goto disable_clk;

	}



	host->hw_name = "sdhci";
@@ -130,17 +130,18 @@ static int __devinit sdhci_probe(struct platform_device *pdev) 
	host->irq = platform_get_irq(pdev, 0);

	host->quirks = SDHCI_QUIRK_BROKEN_ADMA;



	host->ioaddr = ioremap(iomem->start, resource_size(iomem));

	host->ioaddr = devm_ioremap(&pdev->dev, iomem->start,

			resource_size(iomem));

	if (!host->ioaddr) {

		ret = -ENOMEM;

		dev_dbg(&pdev->dev, "failed to remap registers\n");

		goto err_ioremap;

		goto free_host;

	}



	ret = sdhci_add_host(host);

	if (ret) {

		dev_dbg(&pdev->dev, "error adding host\n");

		goto err_add_host;

		goto free_host;

	}



	platform_set_drvdata(pdev, host);
@@ -159,11 +160,12 @@ static int __devinit sdhci_probe(struct platform_device *pdev) 
	if (sdhci->data->card_power_gpio >= 0) {

		int val = 0;



		ret = gpio_request(sdhci->data->card_power_gpio, "sdhci");

		ret = devm_gpio_request(&pdev->dev,

				sdhci->data->card_power_gpio, "sdhci");

		if (ret < 0) {

			dev_dbg(&pdev->dev, "gpio request fail: %d\n",

					sdhci->data->card_power_gpio);

			goto err_pgpio_request;

			goto set_drvdata;

		}



		if (sdhci->data->power_always_enb)
@@ -175,60 +177,48 @@ static int __devinit sdhci_probe(struct platform_device *pdev) 
		if (ret) {

			dev_dbg(&pdev->dev, "gpio set direction fail: %d\n",

					sdhci->data->card_power_gpio);

			goto err_pgpio_direction;

			goto set_drvdata;

		}

	}



	if (sdhci->data->card_int_gpio >= 0) {

		ret = gpio_request(sdhci->data->card_int_gpio, "sdhci");

		ret = devm_gpio_request(&pdev->dev, sdhci->data->card_int_gpio,

				"sdhci");

		if (ret < 0) {

			dev_dbg(&pdev->dev, "gpio request fail: %d\n",

					sdhci->data->card_int_gpio);

			goto err_igpio_request;

			goto set_drvdata;

		}



		ret = gpio_direction_input(sdhci->data->card_int_gpio);

		if (ret) {

			dev_dbg(&pdev->dev, "gpio set direction fail: %d\n",

					sdhci->data->card_int_gpio);

			goto err_igpio_direction;

			goto set_drvdata;

		}

		ret = request_irq(gpio_to_irq(sdhci->data->card_int_gpio),

		ret = devm_request_irq(&pdev->dev,

				gpio_to_irq(sdhci->data->card_int_gpio),

				sdhci_gpio_irq, IRQF_TRIGGER_LOW,

				mmc_hostname(host->mmc), pdev);

		if (ret) {

			dev_dbg(&pdev->dev, "gpio request irq fail: %d\n",

					sdhci->data->card_int_gpio);

			goto err_igpio_request_irq;

			goto set_drvdata;

		}



	}



	return 0;



err_igpio_request_irq:

err_igpio_direction:

	if (sdhci->data->card_int_gpio >= 0)

		gpio_free(sdhci->data->card_int_gpio);

err_igpio_request:

err_pgpio_direction:

	if (sdhci->data->card_power_gpio >= 0)

		gpio_free(sdhci->data->card_power_gpio);

err_pgpio_request:

set_drvdata:

	platform_set_drvdata(pdev, NULL);

	sdhci_remove_host(host, 1);

err_add_host:

	iounmap(host->ioaddr);

err_ioremap:

free_host:

	sdhci_free_host(host);

err_alloc_host:

disable_clk:

	clk_disable(sdhci->clk);

err_clk_enb:

put_clk:

	clk_put(sdhci->clk);

err_clk_get:

	kfree(sdhci);

err_kzalloc:

	release_mem_region(iomem->start, resource_size(iomem));

err:

	dev_err(&pdev->dev, "spear-sdhci probe failed: %d\n", ret);

	return ret;
@@ -237,35 +227,19 @@ err: 
static int __devexit sdhci_remove(struct platform_device *pdev)

{

	struct sdhci_host *host = platform_get_drvdata(pdev);

	struct resource *iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	struct spear_sdhci *sdhci = dev_get_platdata(&pdev->dev);

	int dead;

	int dead = 0;

	u32 scratch;



	if (sdhci->data) {

		if (sdhci->data->card_int_gpio >= 0) {

			free_irq(gpio_to_irq(sdhci->data->card_int_gpio), pdev);

			gpio_free(sdhci->data->card_int_gpio);

		}



		if (sdhci->data->card_power_gpio >= 0)

			gpio_free(sdhci->data->card_power_gpio);

	}



	platform_set_drvdata(pdev, NULL);

	dead = 0;

	scratch = readl(host->ioaddr + SDHCI_INT_STATUS);

	if (scratch == (u32)-1)

		dead = 1;



	sdhci_remove_host(host, dead);

	iounmap(host->ioaddr);

	sdhci_free_host(host);

	clk_disable(sdhci->clk);

	clk_put(sdhci->clk);

	kfree(sdhci);

	if (iomem)

		release_mem_region(iomem->start, resource_size(iomem));



	return 0;

}