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rtc: rtc-bq4802: use devm_*() functions

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Use devm_*() functions to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jingoo Han 2013-04-29 16:20:36 -07:00 committed by Linus Torvalds
parent 87e7d520ed
commit 26c5f7d93a
1 changed files with 8 additions and 21 deletions
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29
drivers/rtc/rtc-bq4802.c
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@ -142,7 +142,7 @@ static const struct rtc_class_ops bq4802_ops = {
static int bq4802_probe(struct platform_device *pdev)
{
struct bq4802 *p = kzalloc(sizeof(*p), GFP_KERNEL);
struct bq4802 *p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
int err = -ENOMEM;
if (!p)
@ -155,54 +155,41 @@ static int bq4802_probe(struct platform_device *pdev)
p->r = platform_get_resource(pdev, IORESOURCE_IO, 0);
err = -EINVAL;
if (!p->r)
goto out_free;
goto out;
}
if (p->r->flags & IORESOURCE_IO) {
p->ioport = p->r->start;
p->read = bq4802_read_io;
p->write = bq4802_write_io;
} else if (p->r->flags & IORESOURCE_MEM) {
p->regs = ioremap(p->r->start, resource_size(p->r));
p->regs = devm_ioremap(&pdev->dev, p->r->start,
resource_size(p->r));
p->read = bq4802_read_mem;
p->write = bq4802_write_mem;
} else {
err = -EINVAL;
goto out_free;
goto out;
}
platform_set_drvdata(pdev, p);
p->rtc = rtc_device_register("bq4802", &pdev->dev,
&bq4802_ops, THIS_MODULE);
p->rtc = devm_rtc_device_register(&pdev->dev, "bq4802",
&bq4802_ops, THIS_MODULE);
if (IS_ERR(p->rtc)) {
err = PTR_ERR(p->rtc);
goto out_iounmap;
goto out;
}
err = 0;
out:
return err;
out_iounmap:
if (p->r->flags & IORESOURCE_MEM)
iounmap(p->regs);
out_free:
kfree(p);
goto out;
}
static int bq4802_remove(struct platform_device *pdev)
{
struct bq4802 *p = platform_get_drvdata(pdev);
rtc_device_unregister(p->rtc);
if (p->r->flags & IORESOURCE_MEM)
iounmap(p->regs);
platform_set_drvdata(pdev, NULL);
kfree(p);
return 0;
}