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authorAxel Lin <axel.lin@gmail.com>2012-07-01 04:29:28 +0400
committerThierry Reding <thierry.reding@avionic-design.de>2012-07-23 15:23:58 +0400
commit261995dd305ff991ca1cfb462862a5311739333b (patch)
tree3d1077936c0b6d6c08ab1c3f9966a7340b246bb4 /drivers/pwm
parenta9970e3becbbb095296afdf0bcaa1ce2b819360f (diff)
downloadlinux-261995dd305ff991ca1cfb462862a5311739333b.tar.xz
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>
Diffstat (limited to 'drivers/pwm')
-rw-r--r--drivers/pwm/pwm-vt8500.c47
1 files changed, 8 insertions, 39 deletions
diff --git a/drivers/pwm/pwm-vt8500.c b/drivers/pwm/pwm-vt8500.c
index 3db0746f7200..548021439f0c 100644
--- a/drivers/pwm/pwm-vt8500.c
+++ b/drivers/pwm/pwm-vt8500.c
@@ -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 = {