linux-kernel - Re: [PATCH v3 1/4] drivers/rtc/pcf8563: Replace deprecated rtc_time_to_tm() and rtc_tm_to

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Date:	Fri, 12 Jun 2015 17:17:39 +0800
From:	pang.xunlei@....com.cn
To:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Cc:	Alessandro Zummo <a.zummo@...ertech.it>,
	Arnd Bergmann <arnd@...db.de>,
	John Stultz <john.stultz@...aro.org>,
	linux-kernel@...r.kernel.org, Xunlei Pang <pang.xunlei@...aro.org>,
	rtc-linux@...glegroups.com, Xunlei Pang <xlpang@....com>
Subject: Re: [PATCH v3 1/4] drivers/rtc/pcf8563: Replace deprecated rtc_time_to_tm() and
 rtc_tm_to_time()

Hi Alexandre,

Alexandre Belloni <alexandre.belloni@...e-electrons.com> wrote 2015-06-12 
PM 04:40:27:
> 
> Re: [PATCH v3 1/4] drivers/rtc/pcf8563: Replace deprecated 
> rtc_time_to_tm() and rtc_tm_to_time()
> 
> Hi Xunlei,
> 
> Just to let you know that your series are usually classified as spam
> when coming from 126.com. This series in particular didn't make it to
> the mailing list.

Seems ok, I can see it in the mailing list now:
https://lkml.org/lkml/2015/6/11/767

Thanks,
-Xunlei

> 
> I'll take it anyway  but you may want to check that your other patches
> are being received by the maintainers.
> 
> On 12/06/2015 at 10:04:09 +0800, Xunlei Pang wrote :
> > From: Xunlei Pang <pang.xunlei@...aro.org>
> > 
> > pcf8563_rtc_set_alarm() uses deprecated rtc_tm_to_time()
> > and rtc_time_to_tm(), which will overflow in year 2106
> > on 32-bit machines.
> > 
> > This patch solves this by:
> >  - Replacing rtc_time_to_tm() with rtc_time64_to_tm()
> >  - Replacing rtc_tm_to_time() with rtc_tm_to_time64()
> > 
> > Acked-by: Arnd Bergmann <arnd@...db.de>
> > Signed-off-by: Xunlei Pang <pang.xunlei@...aro.org>
> > ---
> > v2->v3:
> > no changes.
> > 
> >  drivers/rtc/rtc-pcf8563.c | 8 ++++----
> >  1 file changed, 4 insertions(+), 4 deletions(-)
> > 
> > diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
> > index 0ba7e59..5f87f84 100644
> > --- a/drivers/rtc/rtc-pcf8563.c
> > +++ b/drivers/rtc/rtc-pcf8563.c
> > @@ -363,13 +363,13 @@ static int pcf8563_rtc_set_alarm(struct 
> device *dev, struct rtc_wkalrm *tm)
> >     struct i2c_client *client = to_i2c_client(dev);
> >     unsigned char buf[4];
> >     int err;
> > -   unsigned long alarm_time;
> > 
> >     /* The alarm has no seconds, round up to nearest minute */
> >     if (tm->time.tm_sec) {
> > -      rtc_tm_to_time(&tm->time, &alarm_time);
> > -      alarm_time += 60-tm->time.tm_sec;
> > -      rtc_time_to_tm(alarm_time, &tm->time);
> > +      time64_t alarm_time = rtc_tm_to_time64(&tm->time);
> > +
> > +      alarm_time += 60 - tm->time.tm_sec;
> > +      rtc_time64_to_tm(alarm_time, &tm->time);
> >     }
> > 
> >     dev_dbg(dev, "%s, min=%d hour=%d wday=%d mday=%d "
> > -- 
> > 1.9.1
> > 
> > 
> 
> -- 
> Alexandre Belloni, Free Electrons
> Embedded Linux, Kernel and Android engineering
> http://free-electrons.com

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