1 files changed, 11 insertions, 32 deletions

diff --git a/drivers/rtc/rtc-lpc32xx.c b/drivers/rtc/rtc-lpc32xx.c
index d5218553741..f130c08c98f 100644
--- a/drivers/rtc/rtc-lpc32xx.c
+++ b/drivers/rtc/rtc-lpc32xx.c
@@ -197,20 +197,13 @@ static const struct rtc_class_ops lpc32xx_rtc_ops = {
 	.alarm_irq_enable	= lpc32xx_rtc_alarm_irq_enable,
 };
 
-static int __devinit lpc32xx_rtc_probe(struct platform_device *pdev)
+static int lpc32xx_rtc_probe(struct platform_device *pdev)
 {
 	struct resource *res;
 	struct lpc32xx_rtc *rtc;
-	resource_size_t size;
 	int rtcirq;
 	u32 tmp;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "Can't get memory resource\n");
-		return -ENOENT;
-	}
-
 	rtcirq = platform_get_irq(pdev, 0);
 	if (rtcirq < 0 || rtcirq >= NR_IRQS) {
 		dev_warn(&pdev->dev, "Can't get interrupt resource\n");
@@ -218,25 +211,15 @@ static int __devinit lpc32xx_rtc_probe(struct platform_device *pdev)
 	}
 
 	rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
-	if (unlikely(!rtc)) {
-		dev_err(&pdev->dev, "Can't allocate memory\n");
+	if (unlikely(!rtc))
 		return -ENOMEM;
-	}
-	rtc->irq = rtcirq;
-
-	size = resource_size(res);
 
-	if (!devm_request_mem_region(&pdev->dev, res->start, size,
-				     pdev->name)) {
-		dev_err(&pdev->dev, "RTC registers are not free\n");
-		return -EBUSY;
-	}
+	rtc->irq = rtcirq;
 
-	rtc->rtc_base = devm_ioremap(&pdev->dev, res->start, size);
-	if (!rtc->rtc_base) {
-		dev_err(&pdev->dev, "Can't map memory\n");
-		return -ENOMEM;
-	}
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	rtc->rtc_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(rtc->rtc_base))
+		return PTR_ERR(rtc->rtc_base);
 
 	spin_lock_init(&rtc->lock);
 
@@ -273,11 +256,10 @@ static int __devinit lpc32xx_rtc_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, rtc);
 
-	rtc->rtc = rtc_device_register(RTC_NAME, &pdev->dev, &lpc32xx_rtc_ops,
-		THIS_MODULE);
+	rtc->rtc = devm_rtc_device_register(&pdev->dev, RTC_NAME,
+					&lpc32xx_rtc_ops, THIS_MODULE);
 	if (IS_ERR(rtc->rtc)) {
 		dev_err(&pdev->dev, "Can't get RTC\n");
-		platform_set_drvdata(pdev, NULL);
 		return PTR_ERR(rtc->rtc);
 	}
 
@@ -299,16 +281,13 @@ static int __devinit lpc32xx_rtc_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int __devexit lpc32xx_rtc_remove(struct platform_device *pdev)
+static int lpc32xx_rtc_remove(struct platform_device *pdev)
 {
 	struct lpc32xx_rtc *rtc = platform_get_drvdata(pdev);
 
 	if (rtc->irq >= 0)
 		device_init_wakeup(&pdev->dev, 0);
 
-	platform_set_drvdata(pdev, NULL);
-	rtc_device_unregister(rtc->rtc);
-
 	return 0;
 }
 
@@ -397,7 +376,7 @@ MODULE_DEVICE_TABLE(of, lpc32xx_rtc_match);
 
 static struct platform_driver lpc32xx_rtc_driver = {
 	.probe		= lpc32xx_rtc_probe,
-	.remove		= __devexit_p(lpc32xx_rtc_remove),
+	.remove		= lpc32xx_rtc_remove,
 	.driver = {
 		.name	= RTC_NAME,
 		.owner	= THIS_MODULE,