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Subject[PATCH 04/27] rtc: rtc-bq4802: use devm_*() functions
Date
Use devm_*() functions to make cleanup paths simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
drivers/rtc/rtc-bq4802.c | 29 ++++++++---------------------
1 files changed, 8 insertions(+), 21 deletions(-)

diff --git a/drivers/rtc/rtc-bq4802.c b/drivers/rtc/rtc-bq4802.c
index 693be71..af28867 100644
--- a/drivers/rtc/rtc-bq4802.c
+++ b/drivers/rtc/rtc-bq4802.c
@@ -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;
}

--
1.7.2.5



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