linux-kernel - [PATCH 35/42] rtc: rtc-stmp3xxx: remove unnecessary platform_set

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Message-id: <003101ce47c8$a4a8cbc0$edfa6340$@samsung.com>
Date:	Fri, 03 May 2013 15:37:12 +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 35/42] rtc: rtc-stmp3xxx: remove unnecessary
 platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@...sung.com>
---
 drivers/rtc/rtc-stmp3xxx.c |   13 +++----------
 1 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c
index 483ce08..90a3e86 100644
--- a/drivers/rtc/rtc-stmp3xxx.c
+++ b/drivers/rtc/rtc-stmp3xxx.c
@@ -225,7 +225,6 @@ static int stmp3xxx_rtc_remove(struct platform_device *pdev)
 
 	writel(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN,
 			rtc_data->io + STMP3XXX_RTC_CTRL_CLR);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }
@@ -274,25 +273,19 @@ static int stmp3xxx_rtc_probe(struct platform_device *pdev)
 
 	rtc_data->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
 				&stmp3xxx_rtc_ops, THIS_MODULE);
-	if (IS_ERR(rtc_data->rtc)) {
-		err = PTR_ERR(rtc_data->rtc);
-		goto out;
-	}
+	if (IS_ERR(rtc_data->rtc))
+		return PTR_ERR(rtc_data->rtc);
 
 	err = devm_request_irq(&pdev->dev, rtc_data->irq_alarm,
 			stmp3xxx_rtc_interrupt, 0, "RTC alarm", &pdev->dev);
 	if (err) {
 		dev_err(&pdev->dev, "Cannot claim IRQ%d\n",
 			rtc_data->irq_alarm);
-		goto out;
+		return err;
 	}
 
 	stmp3xxx_wdt_register(pdev);
 	return 0;
-
-out:
-	platform_set_drvdata(pdev, NULL);
-	return err;
 }
 
 #ifdef CONFIG_PM_SLEEP
-- 
1.7.2.5


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