Leap year which is multiple of 4, just needed 2 LSB for verifying.
A year with zero for all thease two bits means that it is leap year.
Signed-off-by: Jonghwa Lee <jonghwa3....@samsung.com>
---
include/linux/rtc.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index 9531845..d662b8d 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -181,7 +181,7 @@ void rtc_timer_do_work(struct work_struct *work);
static inline bool is_leap_year(unsigned int year)
{
- return (!(year % 4) && (year % 100)) || !(year % 400);
+ return !(year & 0x3);
}
#ifdef CONFIG_RTC_HCTOSYS_DEVICE
--
1.7.9.5
--
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