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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:
Axel Lin 2012-07-01 08:29:28 +08:00 committed by Thierry Reding
parent a9970e3bec
commit 261995dd30
1 changed files with 8 additions and 39 deletions
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47
drivers/pwm/pwm-vt8500.c
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@ -1,5 +1,5 @@
/*
* arch/arm/mach-vt8500/pwm.c
* drivers/pwm/pwm-vt8500.c
*
* Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
*
@ -113,7 +113,7 @@ static int __devinit pwm_probe(struct platform_device *pdev)
struct resource *r;
int ret;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
if (chip == NULL) {
dev_err(&pdev->dev, "failed to allocate memory\n");
return -ENOMEM;
@ -127,61 +127,30 @@ static int __devinit 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;
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;
}
chip->base = ioremap(r->start, resource_size(r));
if (chip->base == NULL) {
dev_err(&pdev->dev, "failed to ioremap() registers\n");
ret = -ENODEV;
goto err_free_mem;
}
chip->base = devm_request_and_ioremap(&pdev->dev, r);
if (chip->base == NULL)
return -EADDRNOTAVAIL;
ret = pwmchip_add(&chip->chip);
if (ret < 0)
goto err_unmap;
return ret;
platform_set_drvdata(pdev, chip);
return ret;
err_unmap:
iounmap(chip->base);
err_free_mem:
release_mem_region(r->start, resource_size(r));
err_free:
kfree(chip);
return ret;
}
static int __devexit pwm_remove(struct platform_device *pdev)
{
struct vt8500_chip *chip;
struct resource *r;
int err;
chip = platform_get_drvdata(pdev);
if (chip == NULL)
return -ENODEV;
err = pwmchip_remove(&chip->chip);
if (err < 0)
return err;
iounmap(chip->base);
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(r->start, resource_size(r));
kfree(chip);
return 0;
return pwmchip_remove(&chip->chip);
}
static struct platform_driver pwm_driver = {