linux-kernel - Re: [PATCH] rtc: pm8xxx: switch to devm_device_init

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Message-ID: <20250317133442c86d4728@mail.local>
Date: Mon, 17 Mar 2025 14:34:42 +0100
From: Alexandre Belloni <alexandre.belloni@...tlin.com>
To: Johan Hovold <johan@...nel.org>
Cc: Johan Hovold <johan+linaro@...nel.org>, linux-arm-msm@...r.kernel.org,
	linux-rtc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rtc: pm8xxx: switch to devm_device_init_wakeup

On 17/03/2025 12:58:07+0100, Johan Hovold wrote:
> On Mon, Mar 17, 2025 at 12:13:11PM +0100, alexandre.belloni@...tlin.com wrote:
> > From: Alexandre Belloni <alexandre.belloni@...tlin.com>
> > 
> > Switch to devm_device_init_wakeup to avoid a possible memory leak as wakeup
> > is never disabled.
> 
> You should probably mention that this was due to a bad merge. The
> no-alarm patch moved the previous call to device_init_wakeup() into the
> conditional, but you had switched it to use devres so we ended up with
> two calls when you applied the patch.
> 
> Unless you want to and can rebase your tree.
> 
> > Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
> > ---
> >  drivers/rtc/rtc-pm8xxx.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c
> > index c6241a0c26e9..70cbac76147b 100644
> > --- a/drivers/rtc/rtc-pm8xxx.c
> > +++ b/drivers/rtc/rtc-pm8xxx.c
> > @@ -647,7 +647,7 @@ static int pm8xxx_rtc_probe(struct platform_device *pdev)
> >  		if (rc)
> >  			return rc;
> >  
> > -		device_init_wakeup(&pdev->dev, true);
> > +		devm_device_init_wakeup(&pdev->dev);
> 
> So you need to remove the call to devm_device_init_wakeup() above as
> well (after platform_set_drvdata()) which the no-alarm patch moved here.
> 
> With that fixed:
> 
> Reviewed-by: Johan Hovold <johan+linaro@...nel.org>

Right, I fixed my merge instead, thanks!

> 
> >  	} else {
> >  		clear_bit(RTC_FEATURE_ALARM, rtc_dd->rtc->features);
> >  	}
> 
> Johan
> 

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com