On 03/12/2015 at 19:12:24 -0500, Sasha Levin wrote :
> At some point after humans go extinct and robots cotrol the world, dividing
> he time64_t by 86400 to extract the days will overflow a 32bit integer,
> leading to incorrect conversion into rtc_time in rtc_time64_to_tm().
>
And at that time, the robots won't care about 32bit platforms :)
> Signed-off-by: Sasha Levin <sasha.le...@oracle.com>
> ---
> drivers/rtc/rtc-lib.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/rtc/rtc-lib.c b/drivers/rtc/rtc-lib.c
> index e6bfb9c..459cd4d 100644
> --- a/drivers/rtc/rtc-lib.c
> +++ b/drivers/rtc/rtc-lib.c
> @@ -54,11 +54,11 @@ void rtc_time64_to_tm(time64_t time, struct rtc_time *tm)
> {
> unsigned int month, year;
> unsigned long secs;
> - int days;
> + time64_t days;
>
> /* time must be positive */
> days = div_s64(time, 86400);
> - secs = time - (unsigned int) days * 86400;
> + secs = time - days * 86400;
>
> /* day of the week, 1970-01-01 was a Thursday */
> tm->tm_wday = (days + 4) % 7;
> --
> 1.7.10.4
>
--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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