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

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>

diff --git a/drivers/rtc/rtc-pcap.c b/drivers/rtc/rtc-pcap.c
index ce0982490e8c18dda4ddafea1586efd49c4a376a..539a90b98bc5e1f8bb6f0dd39086c111110aafd9 100644 (file)
--- a/drivers/rtc/rtc-pcap.c
+++ b/drivers/rtc/rtc-pcap.c
@@ -145,7 +145,8 @@ static int __init pcap_rtc_probe(struct platform_device *pdev)
        int timer_irq, alarm_irq;
        int err = -ENOMEM;
 
-       pcap_rtc = kmalloc(sizeof(struct pcap_rtc), GFP_KERNEL);
+       pcap_rtc = devm_kzalloc(&pdev->dev, sizeof(struct pcap_rtc),
+                               GFP_KERNEL);
        if (!pcap_rtc)
                return err;
 
@@ -153,45 +154,34 @@ static int __init pcap_rtc_probe(struct platform_device *pdev)
 
        platform_set_drvdata(pdev, pcap_rtc);
 
-       pcap_rtc->rtc = rtc_device_register("pcap", &pdev->dev,
-                                 &pcap_rtc_ops, THIS_MODULE);
+       pcap_rtc->rtc = devm_rtc_device_register(&pdev->dev, "pcap",
+                                       &pcap_rtc_ops, THIS_MODULE);
        if (IS_ERR(pcap_rtc->rtc)) {
                err = PTR_ERR(pcap_rtc->rtc);
-               goto fail_rtc;
+               goto fail;
        }
 
-
        timer_irq = pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_1HZ);
        alarm_irq = pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_TODA);
 
-       err = request_irq(timer_irq, pcap_rtc_irq, 0, "RTC Timer", pcap_rtc);
+       err = devm_request_irq(&pdev->dev, timer_irq, pcap_rtc_irq, 0,
+                               "RTC Timer", pcap_rtc);
        if (err)
-               goto fail_timer;
+               goto fail;
 
-       err = request_irq(alarm_irq, pcap_rtc_irq, 0, "RTC Alarm", pcap_rtc);
+       err = devm_request_irq(&pdev->dev, alarm_irq, pcap_rtc_irq, 0,
+                               "RTC Alarm", pcap_rtc);
        if (err)
-               goto fail_alarm;
+               goto fail;
 
        return 0;
-fail_alarm:
-       free_irq(timer_irq, pcap_rtc);
-fail_timer:
-       rtc_device_unregister(pcap_rtc->rtc);
-fail_rtc:
+fail:
        platform_set_drvdata(pdev, NULL);
-       kfree(pcap_rtc);
        return err;
 }
 
 static int __exit pcap_rtc_remove(struct platform_device *pdev)
 {
-       struct pcap_rtc *pcap_rtc = platform_get_drvdata(pdev);
-
-       free_irq(pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_1HZ), pcap_rtc);
-       free_irq(pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_TODA), pcap_rtc);
-       rtc_device_unregister(pcap_rtc->rtc);
-       kfree(pcap_rtc);
-
        return 0;
 }