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rtc: fix rtc_time64_to_tm for 3477

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The current correction for leap years will fail in 3477. 3476-12-31 being
3477-01-00 because this is 366 leap years after 1970 and 3477 isn't a leap
year.

Fix that by looping over until days is positive or zero.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2018-02-28 22:50:53 +01:00
parent 561f8281cf
commit f18046c50d
1 changed files with 1 additions and 1 deletions
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2
drivers/rtc/rtc-lib.c
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@ -65,7 +65,7 @@ void rtc_time64_to_tm(time64_t time, struct rtc_time *tm)
days -= (year - 1970) * 365
+ LEAPS_THRU_END_OF(year - 1)
- LEAPS_THRU_END_OF(1970 - 1);
if (days < 0) {
while (days < 0) {
year -= 1;
days += 365 + is_leap_year(year);
}