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From: <sean.wang@mediatek.com>
To: <robh+dt@kernel.org>, <mark.rutland@arm.com>, <sre@kernel.org>,
	<lee.jones@linaro.org>, <a.zummo@towertech.it>,
	<alexandre.belloni@free-electrons.com>,
	<eddie.huang@mediatek.com>
Cc: <devicetree@vger.kernel.org>, <linux-rtc@vger.kernel.org>,
	<linux-pm@vger.kernel.org>, <linux-mediatek@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>,
	Sean Wang <sean.wang@mediatek.com>
Subject: [PATCH v1 09/16] rtc: mediatek: convert to use device managed functions
Date: Fri, 23 Mar 2018 17:15:06 +0800	[thread overview]
Message-ID: <fbfb1852838820c198d55bc74940a74f1d0b53ed.1521794177.git.sean.wang@mediatek.com> (raw)
In-Reply-To: <cover.1521794176.git.sean.wang@mediatek.com>

From: Sean Wang <sean.wang@mediatek.com>

Use device managed operation to simplify error handling, reduce source
code size, and reduce the likelyhood of bugs, and remove our removal
callback which contains anything already done by device managed functions.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
 drivers/rtc/rtc-mt6397.c | 31 ++++++++-----------------------
 1 file changed, 8 insertions(+), 23 deletions(-)

diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c
index cefb83b..bfc5d6f 100644
--- a/drivers/rtc/rtc-mt6397.c
+++ b/drivers/rtc/rtc-mt6397.c
@@ -14,6 +14,7 @@
 
 #include <linux/delay.h>
 #include <linux/init.h>
+#include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/regmap.h>
 #include <linux/rtc.h>
@@ -328,10 +329,10 @@ static int mtk_rtc_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, rtc);
 
-	ret = request_threaded_irq(rtc->irq, NULL,
-				   mtk_rtc_irq_handler_thread,
-				   IRQF_ONESHOT | IRQF_TRIGGER_HIGH,
-				   "mt6397-rtc", rtc);
+	ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,
+					mtk_rtc_irq_handler_thread,
+					IRQF_ONESHOT | IRQF_TRIGGER_HIGH,
+					"mt6397-rtc", rtc);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
 			rtc->irq, ret);
@@ -340,30 +341,15 @@ static int mtk_rtc_probe(struct platform_device *pdev)
 
 	device_init_wakeup(&pdev->dev, 1);
 
-	rtc->rtc_dev = rtc_device_register("mt6397-rtc", &pdev->dev,
-					   &mtk_rtc_ops, THIS_MODULE);
+	rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, "mt6397-rtc",
+						&mtk_rtc_ops, THIS_MODULE);
 	if (IS_ERR(rtc->rtc_dev)) {
 		dev_err(&pdev->dev, "register rtc device failed\n");
 		ret = PTR_ERR(rtc->rtc_dev);
-		goto out_free_irq;
+		return ret;
 	}
 
 	return 0;
-
-out_free_irq:
-	free_irq(rtc->irq, rtc->rtc_dev);
-
-	return ret;
-}
-
-static int mtk_rtc_remove(struct platform_device *pdev)
-{
-	struct mt6397_rtc *rtc = platform_get_drvdata(pdev);
-
-	rtc_device_unregister(rtc->rtc_dev);
-	free_irq(rtc->irq, rtc->rtc_dev);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
@@ -405,7 +391,6 @@ static struct platform_driver mtk_rtc_driver = {
 		.pm = &mt6397_pm_ops,
 	},
 	.probe	= mtk_rtc_probe,
-	.remove = mtk_rtc_remove,
 };
 
 module_platform_driver(mtk_rtc_driver);
-- 
2.7.4

  parent reply	other threads:[~2018-03-23  9:17 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-23  9:14 [PATCH v1 00/16] Add support to MT6323 RTC and its power device sean.wang
2018-03-23  9:14 ` [PATCH v1 01/16] dt-bindings: power: reset: mediatek: add bindings for " sean.wang
2018-03-26 22:24   ` Rob Herring
2018-03-27  3:21     ` Sean Wang
2018-03-23  9:14 ` [PATCH v1 02/16] dt-bindings: rtc: mediatek: add bindings for PMIC RTC sean.wang
2018-03-23  9:41   ` Alexandre Belloni
2018-03-23 10:15     ` Alexandre Belloni
2018-03-24 19:36       ` Sean Wang
2018-03-27 15:18         ` Alexandre Belloni
2018-03-28  3:53           ` Sean Wang
2018-03-28  9:19             ` Alexandre Belloni
2018-03-23  9:15 ` [PATCH v1 03/16] dt-bindings: mfd: mediatek: add a description for MT6323 RTC sean.wang
2018-03-26 22:24   ` Rob Herring
2018-03-28 11:13   ` Lee Jones
2018-03-23  9:15 ` [PATCH v1 04/16] mfd: mt6397: add MT6323 RTC support into MT6397 driver sean.wang
2018-03-28 11:15   ` Lee Jones
2018-03-23  9:15 ` [PATCH v1 05/16] rtc: mediatek: add MT6323 support to RTC driver sean.wang
2018-03-23 10:01   ` Alexandre Belloni
2018-03-24  7:06     ` Sean Wang
2018-03-23  9:15 ` [PATCH v1 06/16] rtc: mediatek: remove unnecessary parentheses sean.wang
2018-03-23 10:21   ` Alexandre Belloni
2018-03-24  7:14     ` Sean Wang
2018-03-24 18:53       ` Alexandre Belloni
2018-03-24 19:21         ` Sean Wang
2018-03-23  9:15 ` [PATCH v1 07/16] rtc: mediatek: replace a poll with regmap_read_poll_timeout sean.wang
2018-03-23  9:15 ` [PATCH v1 08/16] rtc: mediatek: remove unnecessary irq_dispose_mapping sean.wang
2018-03-23 10:38   ` Alexandre Belloni
2018-03-26  2:22     ` Sean Wang
2018-03-23  9:15 ` sean.wang [this message]
2018-03-23 10:50   ` [PATCH v1 09/16] rtc: mediatek: convert to use device managed functions Alexandre Belloni
2018-03-26  4:07     ` Sean Wang
2018-03-27 15:07       ` Alexandre Belloni
2018-03-23  9:15 ` [PATCH v1 10/16] rtc: mediatek: add devm_of_platform_populate sean.wang
2018-03-23  9:15 ` [PATCH v1 11/16] rtc: mediatek: move the declaration into a globally visible header file sean.wang
2018-03-23  9:57   ` Alexandre Belloni
2018-03-24  7:31     ` Sean Wang
2018-03-24 18:54       ` Alexandre Belloni
2018-03-24 20:00   ` Fabio Estevam
2018-03-25  3:13     ` Sean Wang
2018-03-23  9:15 ` [PATCH v1 12/16] rtc: mediatek: cleanup header files to include sean.wang
2018-03-25  4:17   ` kbuild test robot
2018-03-25  5:21   ` kbuild test robot
2018-03-23  9:15 ` [PATCH v1 13/16] rtc: mediatek: update license converting to using SPDX identifiers sean.wang
2018-03-23  9:15 ` [PATCH v1 14/16] power: reset: mediatek: add a power-off driver using PMIC RTC device sean.wang
2018-03-23  9:15 ` [PATCH v1 15/16] MAINTAINERS: update entry for ARM/Mediatek RTC DRIVER sean.wang
2018-03-23  9:15 ` [PATCH v1 16/16] MAINTAINERS: add an entry for MediaTek board level shutdown driver sean.wang

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