linux-kernel - [PATCH V2 08/30] rtc: rtc-ds1742: use devm_rtc_device

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Message-id: <008201ce1a3f$38fe6120$aafb2360$%han@samsung.com>
Date:	Wed, 06 Mar 2013 16:50:08 +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 V2 08/30] rtc: rtc-ds1742: use devm_rtc_device_register()

devm_rtc_device_register() is device managed and makes cleanup
paths simpler.

Signed-off-by: Jingoo Han <jg1.han@...sung.com>
---
Changes since v1:
- used 'struct device *dev' as the first argument

 drivers/rtc/rtc-ds1742.c |    8 ++------
 1 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/rtc/rtc-ds1742.c b/drivers/rtc/rtc-ds1742.c
index 609c870..eccdc62 100644
--- a/drivers/rtc/rtc-ds1742.c
+++ b/drivers/rtc/rtc-ds1742.c
@@ -208,17 +208,14 @@ static int ds1742_rtc_probe(struct platform_device *pdev)
 
 	pdata->last_jiffies = jiffies;
 	platform_set_drvdata(pdev, pdata);
-	rtc = rtc_device_register(pdev->name, &pdev->dev,
+	rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
 				  &ds1742_rtc_ops, THIS_MODULE);
 	if (IS_ERR(rtc))
 		return PTR_ERR(rtc);
 	pdata->rtc = rtc;
 
 	ret = sysfs_create_bin_file(&pdev->dev.kobj, &pdata->nvram_attr);
-	if (ret) {
-		dev_err(&pdev->dev, "creating nvram file in sysfs failed\n");
-		rtc_device_unregister(rtc);
-	}
+
 	return ret;
 }
 
@@ -227,7 +224,6 @@ static int ds1742_rtc_remove(struct platform_device *pdev)
 	struct rtc_plat_data *pdata = platform_get_drvdata(pdev);
 
 	sysfs_remove_bin_file(&pdev->dev.kobj, &pdata->nvram_attr);
-	rtc_device_unregister(pdata->rtc);
 	return 0;
 }
 
-- 
1.7.2.5


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