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Subject[PATCH 03/12] rtc: rtc-vt8500: use devm_*() functions
Date
Use devm_*() functions to make cleanup paths more simple.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
drivers/rtc/rtc-vt8500.c | 28 ++++++++++------------------
1 files changed, 10 insertions(+), 18 deletions(-)

diff --git a/drivers/rtc/rtc-vt8500.c b/drivers/rtc/rtc-vt8500.c
index 2730533..a000bc0 100644
--- a/drivers/rtc/rtc-vt8500.c
+++ b/drivers/rtc/rtc-vt8500.c
@@ -231,20 +231,21 @@ static int vt8500_rtc_probe(struct platform_device *pdev)
return -ENXIO;
}

- vt8500_rtc->res = request_mem_region(vt8500_rtc->res->start,
- resource_size(vt8500_rtc->res),
- "vt8500-rtc");
+ vt8500_rtc->res = devm_request_mem_region(&pdev->dev,
+ vt8500_rtc->res->start,
+ resource_size(vt8500_rtc->res),
+ "vt8500-rtc");
if (vt8500_rtc->res == NULL) {
dev_err(&pdev->dev, "failed to request I/O memory\n");
return -EBUSY;
}

- vt8500_rtc->regbase = ioremap(vt8500_rtc->res->start,
+ vt8500_rtc->regbase = devm_ioremap(&pdev->dev, vt8500_rtc->res->start,
resource_size(vt8500_rtc->res));
if (!vt8500_rtc->regbase) {
dev_err(&pdev->dev, "Unable to map RTC I/O memory\n");
ret = -EBUSY;
- goto err_release;
+ goto err_return;
}

/* Enable RTC and set it to 24-hour mode */
@@ -257,11 +258,11 @@ static int vt8500_rtc_probe(struct platform_device *pdev)
ret = PTR_ERR(vt8500_rtc->rtc);
dev_err(&pdev->dev,
"Failed to register RTC device -> %d\n", ret);
- goto err_unmap;
+ goto err_return;
}

- ret = request_irq(vt8500_rtc->irq_alarm, vt8500_rtc_irq, 0,
- "rtc alarm", vt8500_rtc);
+ ret = devm_request_irq(&pdev->dev, vt8500_rtc->irq_alarm,
+ vt8500_rtc_irq, 0, "rtc alarm", vt8500_rtc);
if (ret < 0) {
dev_err(&pdev->dev, "can't get irq %i, err %d\n",
vt8500_rtc->irq_alarm, ret);
@@ -272,11 +273,7 @@ static int vt8500_rtc_probe(struct platform_device *pdev)

err_unreg:
rtc_device_unregister(vt8500_rtc->rtc);
-err_unmap:
- iounmap(vt8500_rtc->regbase);
-err_release:
- release_mem_region(vt8500_rtc->res->start,
- resource_size(vt8500_rtc->res));
+err_return:
return ret;
}

@@ -284,15 +281,10 @@ static int vt8500_rtc_remove(struct platform_device *pdev)
{
struct vt8500_rtc *vt8500_rtc = platform_get_drvdata(pdev);

- free_irq(vt8500_rtc->irq_alarm, vt8500_rtc);
-
rtc_device_unregister(vt8500_rtc->rtc);

/* Disable alarm matching */
writel(0, vt8500_rtc->regbase + VT8500_RTC_IS);
- iounmap(vt8500_rtc->regbase);
- release_mem_region(vt8500_rtc->res->start,
- resource_size(vt8500_rtc->res));

platform_set_drvdata(pdev, NULL);

--
1.7.2.5



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