1 files changed, 19 insertions, 31 deletions

diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index 50a5c4adee4..b6e1ca08c2c 100644
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -108,9 +108,6 @@ static int sa1100_rtc_open(struct device *dev)
 	struct rtc_device *rtc = info->rtc;
 	int ret;
 
-	ret = clk_prepare_enable(info->clk);
-	if (ret)
-		goto fail_clk;
 	ret = request_irq(info->irq_1hz, sa1100_rtc_interrupt, 0, "rtc 1Hz", dev);
 	if (ret) {
 		dev_err(dev, "IRQ %d already in use.\n", info->irq_1hz);
@@ -130,7 +127,6 @@ static int sa1100_rtc_open(struct device *dev)
 	free_irq(info->irq_1hz, dev);
  fail_ui:
 	clk_disable_unprepare(info->clk);
- fail_clk:
 	return ret;
 }
 
@@ -144,7 +140,6 @@ static void sa1100_rtc_release(struct device *dev)
 
 	free_irq(info->irq_alarm, dev);
 	free_irq(info->irq_1hz, dev);
-	clk_disable_unprepare(info->clk);
 }
 
 static int sa1100_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
@@ -239,20 +234,22 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
 	if (irq_1hz < 0 || irq_alarm < 0)
 		return -ENODEV;
 
-	info = kzalloc(sizeof(struct sa1100_rtc), GFP_KERNEL);
+	info = devm_kzalloc(&pdev->dev, sizeof(struct sa1100_rtc), GFP_KERNEL);
 	if (!info)
 		return -ENOMEM;
-	info->clk = clk_get(&pdev->dev, NULL);
+	info->clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(info->clk)) {
 		dev_err(&pdev->dev, "failed to find rtc clock source\n");
-		ret = PTR_ERR(info->clk);
-		goto err_clk;
+		return PTR_ERR(info->clk);
 	}
 	info->irq_1hz = irq_1hz;
 	info->irq_alarm = irq_alarm;
 	spin_lock_init(&info->lock);
 	platform_set_drvdata(pdev, info);
 
+	ret = clk_prepare_enable(info->clk);
+	if (ret)
+		return ret;
 	/*
 	 * According to the manual we should be able to let RTTR be zero
 	 * and then a default diviser for a 32.768KHz clock is used.
@@ -270,8 +267,8 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
 
 	device_init_wakeup(&pdev->dev, 1);
 
-	rtc = rtc_device_register(pdev->name, &pdev->dev, &sa1100_rtc_ops,
-		THIS_MODULE);
+	rtc = devm_rtc_device_register(&pdev->dev, pdev->name, &sa1100_rtc_ops,
+					THIS_MODULE);
 
 	if (IS_ERR(rtc)) {
 		ret = PTR_ERR(rtc);
@@ -305,10 +302,7 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
 
 	return 0;
 err_dev:
-	platform_set_drvdata(pdev, NULL);
-	clk_put(info->clk);
-err_clk:
-	kfree(info);
+	clk_disable_unprepare(info->clk);
 	return ret;
 }
 
@@ -316,17 +310,13 @@ static int sa1100_rtc_remove(struct platform_device *pdev)
 {
 	struct sa1100_rtc *info = platform_get_drvdata(pdev);
 
-	if (info) {
-		rtc_device_unregister(info->rtc);
-		clk_put(info->clk);
-		platform_set_drvdata(pdev, NULL);
-		kfree(info);
-	}
+	if (info)
+		clk_disable_unprepare(info->clk);
 
 	return 0;
 }
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int sa1100_rtc_suspend(struct device *dev)
 {
 	struct sa1100_rtc *info = dev_get_drvdata(dev);
@@ -342,29 +332,27 @@ static int sa1100_rtc_resume(struct device *dev)
 		disable_irq_wake(info->irq_alarm);
 	return 0;
 }
-
-static const struct dev_pm_ops sa1100_rtc_pm_ops = {
-	.suspend	= sa1100_rtc_suspend,
-	.resume		= sa1100_rtc_resume,
-};
 #endif
 
-static struct of_device_id sa1100_rtc_dt_ids[] = {
+static SIMPLE_DEV_PM_OPS(sa1100_rtc_pm_ops, sa1100_rtc_suspend,
+			sa1100_rtc_resume);
+
+#ifdef CONFIG_OF
+static const struct of_device_id sa1100_rtc_dt_ids[] = {
 	{ .compatible = "mrvl,sa1100-rtc", },
 	{ .compatible = "mrvl,mmp-rtc", },
 	{}
 };
 MODULE_DEVICE_TABLE(of, sa1100_rtc_dt_ids);
+#endif
 
 static struct platform_driver sa1100_rtc_driver = {
 	.probe		= sa1100_rtc_probe,
 	.remove		= sa1100_rtc_remove,
 	.driver		= {
 		.name	= "sa1100-rtc",
-#ifdef CONFIG_PM
 		.pm	= &sa1100_rtc_pm_ops,
-#endif
-		.of_match_table = sa1100_rtc_dt_ids,
+		.of_match_table = of_match_ptr(sa1100_rtc_dt_ids),
 	},
 };