pwm: Convert pwm-vt8500 to use devm_* APIs
Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
This commit is contained in:
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a9970e3bec
commit
261995dd30
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@ -1,5 +1,5 @@
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/*
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/*
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* arch/arm/mach-vt8500/pwm.c
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* drivers/pwm/pwm-vt8500.c
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*
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*
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* Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
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* Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
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*
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*
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@ -113,7 +113,7 @@ static int __devinit pwm_probe(struct platform_device *pdev)
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struct resource *r;
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struct resource *r;
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int ret;
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int ret;
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chip = kzalloc(sizeof(*chip), GFP_KERNEL);
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chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
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if (chip == NULL) {
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if (chip == NULL) {
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dev_err(&pdev->dev, "failed to allocate memory\n");
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dev_err(&pdev->dev, "failed to allocate memory\n");
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return -ENOMEM;
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return -ENOMEM;
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@ -127,61 +127,30 @@ static int __devinit pwm_probe(struct platform_device *pdev)
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r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (r == NULL) {
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if (r == NULL) {
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dev_err(&pdev->dev, "no memory resource defined\n");
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dev_err(&pdev->dev, "no memory resource defined\n");
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ret = -ENODEV;
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return -ENODEV;
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goto err_free;
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}
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}
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r = request_mem_region(r->start, resource_size(r), pdev->name);
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chip->base = devm_request_and_ioremap(&pdev->dev, r);
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if (r == NULL) {
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if (chip->base == NULL)
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dev_err(&pdev->dev, "failed to request memory resource\n");
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return -EADDRNOTAVAIL;
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ret = -EBUSY;
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goto err_free;
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}
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chip->base = ioremap(r->start, resource_size(r));
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if (chip->base == NULL) {
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dev_err(&pdev->dev, "failed to ioremap() registers\n");
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ret = -ENODEV;
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goto err_free_mem;
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}
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ret = pwmchip_add(&chip->chip);
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ret = pwmchip_add(&chip->chip);
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if (ret < 0)
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if (ret < 0)
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goto err_unmap;
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return ret;
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platform_set_drvdata(pdev, chip);
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platform_set_drvdata(pdev, chip);
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return ret;
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return ret;
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err_unmap:
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iounmap(chip->base);
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err_free_mem:
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release_mem_region(r->start, resource_size(r));
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err_free:
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kfree(chip);
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return ret;
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}
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}
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static int __devexit pwm_remove(struct platform_device *pdev)
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static int __devexit pwm_remove(struct platform_device *pdev)
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{
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{
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struct vt8500_chip *chip;
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struct vt8500_chip *chip;
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struct resource *r;
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int err;
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chip = platform_get_drvdata(pdev);
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chip = platform_get_drvdata(pdev);
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if (chip == NULL)
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if (chip == NULL)
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return -ENODEV;
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return -ENODEV;
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err = pwmchip_remove(&chip->chip);
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return pwmchip_remove(&chip->chip);
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if (err < 0)
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return err;
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iounmap(chip->base);
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r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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release_mem_region(r->start, resource_size(r));
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kfree(chip);
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return 0;
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}
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}
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static struct platform_driver pwm_driver = {
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static struct platform_driver pwm_driver = {
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