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rtc: m41t80: set range

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This is a standard BCD RTC that will fail in 2100. The century bits don't
help because 2100 will be considered a leap year while it is not.

Link: https://lore.kernel.org/r/20191003213544.5359-1-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2019-10-03 23:35:44 +02:00
parent 09ef18bcd5
commit cf79e7c3c9
1 changed files with 2 additions and 3 deletions
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5
drivers/rtc/rtc-m41t80.c
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@ -235,9 +235,6 @@ static int m41t80_rtc_set_time(struct device *dev, struct rtc_time *tm)
unsigned char buf[8];
int err, flags;
if (tm->tm_year < 100 || tm->tm_year > 199)
return -EINVAL;
buf[M41T80_REG_SSEC] = 0;
buf[M41T80_REG_SEC] = bin2bcd(tm->tm_sec);
buf[M41T80_REG_MIN] = bin2bcd(tm->tm_min);
@ -925,6 +922,8 @@ static int m41t80_probe(struct i2c_client *client,
}
m41t80_data->rtc->ops = &m41t80_rtc_ops;
m41t80_data->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
m41t80_data->rtc->range_max = RTC_TIMESTAMP_END_2099;
if (client->irq <= 0) {
/* We cannot support UIE mode if we do not have an IRQ line */