[PATCH 26/27] rtc: rtc-stmp3xxx: use devm_*() functions

[Jingoo Han]

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

Signed-off-by: Jingoo Han <jg1....@samsung.com>
---
 drivers/rtc/rtc-stmp3xxx.c |   34 +++++++++++-----------------------
 1 files changed, 11 insertions(+), 23 deletions(-)

diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c
index 98f0d3c..0930f27 100644
--- a/drivers/rtc/rtc-stmp3xxx.c
+++ b/drivers/rtc/rtc-stmp3xxx.c
@@ -227,11 +227,7 @@ static int stmp3xxx_rtc_remove(struct platform_device 
*pdev)
 
        writel(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN,
                        rtc_data->io + STMP3XXX_RTC_CTRL_CLR);
-       free_irq(rtc_data->irq_alarm, &pdev->dev);
-       rtc_device_unregister(rtc_data->rtc);
        platform_set_drvdata(pdev, NULL);
-       iounmap(rtc_data->io);
-       kfree(rtc_data);
 
        return 0;
 }
@@ -242,22 +238,20 @@ static int stmp3xxx_rtc_probe(struct platform_device 
*pdev)
        struct resource *r;
        int err;
 
-       rtc_data = kzalloc(sizeof *rtc_data, GFP_KERNEL);
+       rtc_data = devm_kzalloc(&pdev->dev, sizeof(*rtc_data), GFP_KERNEL);
        if (!rtc_data)
                return -ENOMEM;
 
        r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        if (!r) {
                dev_err(&pdev->dev, "failed to get resource\n");
-               err = -ENXIO;
-               goto out_free;
+               return -ENXIO;
        }
 
-       rtc_data->io = ioremap(r->start, resource_size(r));
+       rtc_data->io = devm_ioremap(&pdev->dev, r->start, resource_size(r));
        if (!rtc_data->io) {
                dev_err(&pdev->dev, "ioremap failed\n");
-               err = -EIO;
-               goto out_free;
+               return -EIO;
        }
 
        rtc_data->irq_alarm = platform_get_irq(pdev, 0);
@@ -265,8 +259,7 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev)
        if (!(readl(STMP3XXX_RTC_STAT + rtc_data->io) &
                        STMP3XXX_RTC_STAT_RTC_PRESENT)) {
                dev_err(&pdev->dev, "no device onboard\n");
-               err = -ENODEV;
-               goto out_remap;
+               return -ENODEV;
        }
 
        platform_set_drvdata(pdev, rtc_data);
@@ -281,31 +274,26 @@ static int stmp3xxx_rtc_probe(struct platform_device 
*pdev)
                        STMP3XXX_RTC_CTRL_ALARM_IRQ_EN,
                        rtc_data->io + STMP3XXX_RTC_CTRL_CLR);
 
-       rtc_data->rtc = rtc_device_register(pdev->name, &pdev->dev,
+       rtc_data->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
                                &stmp3xxx_rtc_ops, THIS_MODULE);
        if (IS_ERR(rtc_data->rtc)) {
                err = PTR_ERR(rtc_data->rtc);
-               goto out_remap;
+               goto out;
        }
 
-       err = request_irq(rtc_data->irq_alarm, stmp3xxx_rtc_interrupt, 0,
-                       "RTC alarm", &pdev->dev);
+       err = devm_request_irq(&pdev->dev, rtc_data->irq_alarm,
+                       stmp3xxx_rtc_interrupt, 0, "RTC alarm", &pdev->dev);
        if (err) {
                dev_err(&pdev->dev, "Cannot claim IRQ%d\n",
                        rtc_data->irq_alarm);
-               goto out_irq_alarm;
+               goto out;
        }
 
        stmp3xxx_wdt_register(pdev);
        return 0;
 
-out_irq_alarm:
-       rtc_device_unregister(rtc_data->rtc);
-out_remap:
+out:
        platform_set_drvdata(pdev, NULL);
-       iounmap(rtc_data->io);
-out_free:
-       kfree(rtc_data);
        return err;
 }
 
-- 
1.7.2.5


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