linux-kernel - [PATCH 25/27] rtc: rtc-sa1100: use devm

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Date:	Mon, 01 Apr 2013 18:50:12 +0900
From:	Jingoo Han <jg1.han@...sung.com>
To:	'Andrew Morton' <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org,
	'Alessandro Zummo' <a.zummo@...ertech.it>,
	rtc-linux@...glegroups.com, 'Jingoo Han' <jg1.han@...sung.com>
Subject: [PATCH 25/27] rtc: rtc-sa1100: use devm_*() functions

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

Signed-off-by: Jingoo Han <jg1.han@...sung.com>
---
 drivers/rtc/rtc-sa1100.c |   17 +++++------------
 1 files changed, 5 insertions(+), 12 deletions(-)

diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index 7e0a088..0060560 100644
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -234,14 +234,13 @@ 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;
@@ -268,8 +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);
@@ -306,9 +305,6 @@ err_dev:
 	clk_disable_unprepare(info->clk);
 err_enable_clk:
 	platform_set_drvdata(pdev, NULL);
-	clk_put(info->clk);
-err_clk:
-	kfree(info);
 	return ret;
 }
 
@@ -317,11 +313,8 @@ 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_disable_unprepare(info->clk);
-		clk_put(info->clk);
 		platform_set_drvdata(pdev, NULL);
-		kfree(info);
 	}
 
 	return 0;
-- 
1.7.2.5


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