linux-kernel - [PATCH 03/27] rtc: rtc-bfin: use devm

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Message-id: <000e01ce2ebd$50eae0f0$f2c0a2d0$%han@samsung.com>
Date:	Mon, 01 Apr 2013 18:43:08 +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 03/27] rtc: rtc-bfin: use devm_*() functions

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

Signed-off-by: Jingoo Han <jg1.han@...sung.com>
---
 drivers/rtc/rtc-bfin.c |   16 +++++-----------
 1 files changed, 5 insertions(+), 11 deletions(-)

diff --git a/drivers/rtc/rtc-bfin.c b/drivers/rtc/rtc-bfin.c
index 4ec614b..d8b06f5 100644
--- a/drivers/rtc/rtc-bfin.c
+++ b/drivers/rtc/rtc-bfin.c
@@ -352,14 +352,14 @@ static int bfin_rtc_probe(struct platform_device *pdev)
 	dev_dbg_stamp(dev);
 
 	/* Allocate memory for our RTC struct */
-	rtc = kzalloc(sizeof(*rtc), GFP_KERNEL);
+	rtc = devm_kzalloc(dev, sizeof(*rtc), GFP_KERNEL);
 	if (unlikely(!rtc))
 		return -ENOMEM;
 	platform_set_drvdata(pdev, rtc);
 	device_init_wakeup(dev, 1);
 
 	/* Register our RTC with the RTC framework */
-	rtc->rtc_dev = rtc_device_register(pdev->name, dev, &bfin_rtc_ops,
+	rtc->rtc_dev = devm_rtc_device_register(dev, pdev->name, &bfin_rtc_ops,
 						THIS_MODULE);
 	if (unlikely(IS_ERR(rtc->rtc_dev))) {
 		ret = PTR_ERR(rtc->rtc_dev);
@@ -367,9 +367,10 @@ static int bfin_rtc_probe(struct platform_device *pdev)
 	}
 
 	/* Grab the IRQ and init the hardware */
-	ret = request_irq(IRQ_RTC, bfin_rtc_interrupt, 0, pdev->name, dev);
+	ret = devm_request_irq(dev, IRQ_RTC, bfin_rtc_interrupt, 0,
+				pdev->name, dev);
 	if (unlikely(ret))
-		goto err_reg;
+		goto err;
 	/* sometimes the bootloader touched things, but the write complete was not
 	 * enabled, so let's just do a quick timeout here since the IRQ will not fire ...
 	 */
@@ -381,23 +382,16 @@ static int bfin_rtc_probe(struct platform_device *pdev)
 
 	return 0;
 
-err_reg:
-	rtc_device_unregister(rtc->rtc_dev);
 err:
-	kfree(rtc);
 	return ret;
 }
 
 static int bfin_rtc_remove(struct platform_device *pdev)
 {
-	struct bfin_rtc *rtc = platform_get_drvdata(pdev);
 	struct device *dev = &pdev->dev;
 
 	bfin_rtc_reset(dev, 0);
-	free_irq(IRQ_RTC, dev);
-	rtc_device_unregister(rtc->rtc_dev);
 	platform_set_drvdata(pdev, NULL);
-	kfree(rtc);
 
 	return 0;
 }
-- 
1.7.2.5


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