linux-kernel - Re: [PATCH v2 1/4] drivers/rtc/pcf8563: Replace deprecated rtc_time_to_tm() and rtc_tm_to

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Date:	Tue, 2 Jun 2015 12:26:39 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Xunlei Pang <xlpang@....com>
Cc:	linux-kernel@...r.kernel.org, rtc-linux@...glegroups.com,
	Alessandro Zummo <a.zummo@...ertech.it>,
	John Stultz <john.stultz@...aro.org>,
	Arnd Bergmann <arnd@...db.de>,
	Xunlei Pang <pang.xunlei@...aro.org>
Subject: Re: [PATCH v2 1/4] drivers/rtc/pcf8563: Replace deprecated
 rtc_time_to_tm() and rtc_tm_to_time()

Xunlei,

Could you please include a cover letter describing what you are trying
to achieve when sending your series?

You have lot of pending patches (27 in patchwork right now) and until
now, I've pushed back on the reviews because it is really really a pain
to follow what you are sending, resending and dropping.

Also, for some series, you sent multiple v2 in a 3 days interval.

Thanks!

On 02/06/2015 at 17:04:19 +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>
> ---
>  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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