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From: Sean Wang <sean.wang@mediatek.com>
To: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: <robh+dt@kernel.org>, <mark.rutland@arm.com>, <sre@kernel.org>,
	<lee.jones@linaro.org>, <a.zummo@towertech.it>,
	<eddie.huang@mediatek.com>, <devicetree@vger.kernel.org>,
	<linux-rtc@vger.kernel.org>, <linux-pm@vger.kernel.org>,
	<linux-mediatek@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v1 08/16] rtc: mediatek: remove unnecessary irq_dispose_mapping
Date: Mon, 26 Mar 2018 10:22:07 +0800	[thread overview]
Message-ID: <1522030927.18424.11.camel@mtkswgap22> (raw)
In-Reply-To: <20180323103801.GH3417@piout.net>

On Fri, 2018-03-23 at 11:38 +0100, Alexandre Belloni wrote:
> On 23/03/2018 at 17:15:05 +0800, sean.wang@mediatek.com wrote:
> > From: Sean Wang <sean.wang@mediatek.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@mediatek.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);
> > +
> 
> Don't you still have a irq_create_mapping?
> 

Sorry for that I didn't mention in the beginning that the series must
depend on another patch [1]. With the patch, the job irq_create_mapping
had been moved from rtc to mfd, so here it should be better to cleanup
up irq_dispose_mapping in all paths.

[1] https://patchwork.kernel.org/patch/9954643/

> >  	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
> > 
> 

  reply	other threads:[~2018-03-26  2:22 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 [this message]
2018-03-23  9:15 ` [PATCH v1 09/16] rtc: mediatek: convert to use device managed functions sean.wang
2018-03-23 10:50   ` 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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