diff options
Diffstat (limited to 'drivers/rtc/rtc-lib.c')
| -rw-r--r-- | drivers/rtc/rtc-lib.c | 81 | 
1 files changed, 0 insertions, 81 deletions
| diff --git a/drivers/rtc/rtc-lib.c b/drivers/rtc/rtc-lib.c index 7bbc26a34bd..ba795a4db1e 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"); | 
