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[PATCH] rtc: Add rtc_merge_alarm()

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Add rtc_merge_alarm(), which can be used by rtc drivers to turn a partially
specified alarm expiry (i.e.  most significant fields set to -1, as with the
RTC_ALM_SET ioctl()) into a fully specified expiry.

If the most significant specified field is earlier than the current time, the
least significant unspecified field is incremented.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Scott Wood 2006-12-10 02:19:00 -08:00 • committed by Linus Torvalds
parent 9080d0ae0f
commit 884b4aaaa2
2 changed files with 82 additions and 0 deletions
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1
include/linux/rtc.h
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@ -106,6 +106,7 @@ 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>