linux-kernel - RE: [PATCH] rtc/ds3232: fix ds3232 get a WARNING trace in resume function

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Date:	Wed, 15 Jul 2015 02:06:06 +0000
From:	Wang Dongsheng <Dongsheng.Wang@...escale.com>
To:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
CC:	"a.zummo@...ertech.it" <a.zummo@...ertech.it>,
	"rtc-linux@...glegroups.com" <rtc-linux@...glegroups.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] rtc/ds3232: fix ds3232 get a WARNING trace in resume
 function

Thanks Belloni. :)

Regards,
-Dongsheng

> -----Original Message-----
> From: Alexandre Belloni [mailto:alexandre.belloni@...e-electrons.com]
> Sent: Wednesday, July 15, 2015 6:51 AM
> To: Wang Dongsheng-B40534
> Cc: a.zummo@...ertech.it; rtc-linux@...glegroups.com; linux-
> kernel@...r.kernel.org
> Subject: Re: [PATCH] rtc/ds3232: fix ds3232 get a WARNING trace in resume
> function
> 
> Hi,
> 
> This seems ok, one small nitpick:
> 
> On 07/07/2015 at 14:12:56 +0800, Dongsheng Wang wrote :
> > From: Wang Dongsheng <dongsheng.wang@...escale.com> diff --git
> > a/drivers/rtc/rtc-ds3232.c b/drivers/rtc/rtc-ds3232.c index
> > 7e48e53..2081155 100644
> > --- a/drivers/rtc/rtc-ds3232.c
> > +++ b/drivers/rtc/rtc-ds3232.c
> > @@ -463,7 +463,10 @@ static int ds3232_suspend(struct device *dev)
> >
> >  	if (device_can_wakeup(dev)) {
> >  		ds3232->suspended = true;
> > -		irq_set_irq_wake(client->irq, 1);
> > +		if (irq_set_irq_wake(client->irq, 1)) {
> > +			dev_info(dev, "Cannot serve as a wakeup source\n");
> 
> I would use dev_warn_once or dev_info_once here to avoid spamming the log each
> time the machine is suspended.
> 
> --
> Alexandre Belloni, Free Electrons
> Embedded Linux, Kernel and Android engineering http://free-electrons.com
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