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Commit a9970e3b authored by Axel Lin's avatar Axel Lin Committed by Thierry Reding
Browse files

pwm: Convert pwm-imx to use devm_* APIs 



Signed-off-by: default avatarAxel Lin <axel.lin@gmail.com>
Signed-off-by: default avatarThierry Reding <thierry.reding@avionic-design.de>
parent eac7a92f

drivers/pwm/pwm-imx.c

+10 −47
Original line number Diff line number Diff line
@@ -159,18 +159,16 @@ static int __devinit imx_pwm_probe(struct platform_device *pdev) 
	struct resource *r;

	int ret = 0;



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

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

	if (imx == NULL) {

		dev_err(&pdev->dev, "failed to allocate memory\n");

		return -ENOMEM;

	}



	imx->clk = clk_get(&pdev->dev, "pwm");

	imx->clk = devm_clk_get(&pdev->dev, "pwm");



	if (IS_ERR(imx->clk)) {

		ret = PTR_ERR(imx->clk);

		goto err_free;

	}

	if (IS_ERR(imx->clk))

		return PTR_ERR(imx->clk);



	imx->chip.ops = &imx_pwm_ops;

	imx->chip.dev = &pdev->dev;
@@ -182,65 +180,30 @@ static int __devinit imx_pwm_probe(struct platform_device *pdev) 
	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (r == NULL) {

		dev_err(&pdev->dev, "no memory resource defined\n");

		ret = -ENODEV;

		goto err_free_clk;

		return -ENODEV;

	}



	r = request_mem_region(r->start, resource_size(r), pdev->name);

	if (r == NULL) {

		dev_err(&pdev->dev, "failed to request memory resource\n");

		ret = -EBUSY;

		goto err_free_clk;

	}



	imx->mmio_base = ioremap(r->start, resource_size(r));

	if (imx->mmio_base == NULL) {

		dev_err(&pdev->dev, "failed to ioremap() registers\n");

		ret = -ENODEV;

		goto err_free_mem;

	}

	imx->mmio_base = devm_request_and_ioremap(&pdev->dev, r);

	if (imx->mmio_base == NULL)

		return -EADDRNOTAVAIL;



	ret = pwmchip_add(&imx->chip);

	if (ret < 0)

		goto err_iounmap;

		return ret;



	platform_set_drvdata(pdev, imx);

	return 0;



err_iounmap:

	iounmap(imx->mmio_base);

err_free_mem:

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

err_free_clk:

	clk_put(imx->clk);

err_free:

	kfree(imx);

	return ret;

}



static int __devexit imx_pwm_remove(struct platform_device *pdev)

{

	struct imx_chip *imx;

	struct resource *r;

	int ret;



	imx = platform_get_drvdata(pdev);

	if (imx == NULL)

		return -ENODEV;



	ret = pwmchip_remove(&imx->chip);

	if (ret)

		return ret;



	iounmap(imx->mmio_base);



	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);

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



	clk_put(imx->clk);



	kfree(imx);

	return 0;

	return pwmchip_remove(&imx->chip);

}



static struct platform_driver imx_pwm_driver = {