linux-kernel - [PATCH v1 08/16] rtc: mediatek: remove unnecessary irq_dispose

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Message-ID: <96f39ce7f57a4dcd7653e049eebc87c83bcbdfc9.1521794177.git.sean.wang@mediatek.com>
Date:   Fri, 23 Mar 2018 17:15:05 +0800
From:   <sean.wang@...iatek.com>
To:     <robh+dt@...nel.org>, <mark.rutland@....com>, <sre@...nel.org>,
        <lee.jones@...aro.org>, <a.zummo@...ertech.it>,
        <alexandre.belloni@...e-electrons.com>, <eddie.huang@...iatek.com>
CC:     <devicetree@...r.kernel.org>, <linux-rtc@...r.kernel.org>,
        <linux-pm@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, Sean Wang <sean.wang@...iatek.com>
Subject: [PATCH v1 08/16] rtc: mediatek: remove unnecessary irq_dispose_mapping

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

It's unnecessary doing irq_dispose_mapping as a reverse operation for
platform_get_irq.

Ususally, irq_dispose_mapping should be called in error path or module
removal to release the resources for irq_of_parse_and_map requested.

Signed-off-by: Sean Wang <sean.wang@...iatek.com>
---
 drivers/rtc/rtc-mt6397.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/rtc/rtc-mt6397.c b/drivers/rtc/rtc-mt6397.c
index b62eaa8..cefb83b 100644
--- a/drivers/rtc/rtc-mt6397.c
+++ b/drivers/rtc/rtc-mt6397.c
@@ -17,7 +17,6 @@
 #include <linux/module.h>
 #include <linux/regmap.h>
 #include <linux/rtc.h>
-#include <linux/irqdomain.h>
 #include <linux/jiffies.h>
 #include <linux/platform_device.h>
 #include <linux/of_address.h>
@@ -336,7 +335,7 @@ static int mtk_rtc_probe(struct platform_device *pdev)
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
 			rtc->irq, ret);
-		goto out_dispose_irq;
+		return ret;
 	}
 
 	device_init_wakeup(&pdev->dev, 1);
@@ -353,8 +352,7 @@ static int mtk_rtc_probe(struct platform_device *pdev)
 
 out_free_irq:
 	free_irq(rtc->irq, rtc->rtc_dev);
-out_dispose_irq:
-	irq_dispose_mapping(rtc->irq);
+
 	return ret;
 }
 
@@ -364,7 +362,6 @@ static int mtk_rtc_remove(struct platform_device *pdev)
 
 	rtc_device_unregister(rtc->rtc_dev);
 	free_irq(rtc->irq, rtc->rtc_dev);
-	irq_dispose_mapping(rtc->irq);
 
 	return 0;
 }
-- 
2.7.4