diff options
| -rw-r--r-- | drivers/rtc/rtc-lib.c | 81 | ||||
| -rw-r--r-- | include/linux/rtc.h | 1 |
2 files changed, 0 insertions, 82 deletions
diff --git a/drivers/rtc/rtc-lib.c b/drivers/rtc/rtc-lib.c index 7bbc26a34bd2..ba795a4db1e9 100644 --- a/drivers/rtc/rtc-lib.c +++ b/drivers/rtc/rtc-lib.c @@ -117,85 +117,4 @@ int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time) } EXPORT_SYMBOL(rtc_tm_to_time); - -/* Merge the valid (i.e. non-negative) fields of alarm into the current - * time. If the valid alarm fields are earlier than the equivalent - * fields in the time, carry one into the least significant invalid - * field, so that the alarm expiry is in the future. It assumes that the - * least significant invalid field is more significant than the most - * significant valid field, and that the seconds field is valid. - * - * This is used by alarms that take relative (rather than absolute) - * times, and/or have a simple binary second counter instead of - * day/hour/minute/sec registers. - */ -void rtc_merge_alarm(struct rtc_time *now, struct rtc_time *alarm) -{ - int *alarmp = &alarm->tm_sec; - int *timep = &now->tm_sec; - int carry_into, i; - - /* Ignore everything past the 6th element (tm_year). */ - for (i = 5; i > 0; i--) { - if (alarmp[i] < 0) - alarmp[i] = timep[i]; - else - break; - } - - /* No carry needed if all fields are valid. */ - if (i == 5) - return; - - for (carry_into = i + 1; i >= 0; i--) { - if (alarmp[i] < timep[i]) - break; - - if (alarmp[i] > timep[i]) - return; - } - - switch (carry_into) { - case 1: - alarm->tm_min++; - - if (alarm->tm_min < 60) - return; - - alarm->tm_min = 0; - /* fall-through */ - - case 2: - alarm->tm_hour++; - - if (alarm->tm_hour < 60) - return; - - alarm->tm_hour = 0; - /* fall-through */ - - case 3: - alarm->tm_mday++; - - if (alarm->tm_mday <= rtc_days_in_month[alarm->tm_mon]) - return; - - alarm->tm_mday = 1; - /* fall-through */ - - case 4: - alarm->tm_mon++; - - if (alarm->tm_mon <= 12) - return; - - alarm->tm_mon = 1; - /* fall-through */ - - case 5: - alarm->tm_year++; - } -} -EXPORT_SYMBOL(rtc_merge_alarm); - MODULE_LICENSE("GPL"); diff --git a/include/linux/rtc.h b/include/linux/rtc.h index 07ecd4ca8ca7..6d5e4a46781e 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -106,7 +106,6 @@ extern int rtc_year_days(unsigned int day, unsigned int month, unsigned int year extern int rtc_valid_tm(struct rtc_time *tm); extern int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time); extern void rtc_time_to_tm(unsigned long time, struct rtc_time *tm); -extern void rtc_merge_alarm(struct rtc_time *now, struct rtc_time *alarm); #include <linux/device.h> #include <linux/seq_file.h> |
