diff mbox series

[2/2] rtc: ds1685: Add range

Message ID 20180531095643.8581-2-alexandre.belloni@bootlin.com
State Accepted
Headers show
Series [1/2] rtc: ds1685: fix possible race condition | expand

Commit Message

Alexandre Belloni May 31, 2018, 9:56 a.m. UTC 
Useful range is 2000-2099 because leap year fails on centuries.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
 drivers/rtc/rtc-ds1685.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c
index e6390475380f..5c0db6c8134c 100644
--- a/drivers/rtc/rtc-ds1685.c
+++ b/drivers/rtc/rtc-ds1685.c
@@ -2043,6 +2043,10 @@  ds1685_rtc_probe(struct platform_device *pdev)
 
 	rtc_dev->ops = &ds1685_rtc_ops;
 
+	/* Century bit is useless because leap year fails in 1900 and 2100 */
+	rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_2000;
+	rtc_dev->range_max = RTC_TIMESTAMP_END_2099;
+
 	/* Maximum periodic rate is 8192Hz (0.122070ms). */
 	rtc_dev->max_user_freq = RTC_MAX_USER_FREQ;