hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[ARM] 3345/1: Fix interday RTC alarms 

Patch from Uli Luckas

This is a bugfix.

The comment in arch/arm/common/rtctime.c explains it:
* FIXME: for now, we just copy the alarm time because we're lazy (and
* is therefore buggy - setting a 10am alarm at 8pm will not result in
* the alarm triggering.)

This patch adds one day to the alarm iff the alarm wrapped beyond midnight and therefore appears to be in the past.

Signed-off-by: Uli Luckas <u.luckas@road-gmbh.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Uli Luckas 2006-02-22 21:12:07 +00:00 committed by Russell King
parent bc66d4496f
commit 75d2f18088
1 changed files with 12 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
arch/arm/common/rtctime.c
View File

@ -128,19 +128,27 @@ EXPORT_SYMBOL(rtc_tm_to_time);
/* /*
* Calculate the next alarm time given the requested alarm time mask * Calculate the next alarm time given the requested alarm time mask
* and the current time. * and the current time.
*
* FIXME: for now, we just copy the alarm time because we're lazy (and
* is therefore buggy - setting a 10am alarm at 8pm will not result in
* the alarm triggering.)
*/ */
void rtc_next_alarm_time(struct rtc_time *next, struct rtc_time *now, struct rtc_time *alrm) void rtc_next_alarm_time(struct rtc_time *next, struct rtc_time *now, struct rtc_time *alrm)
{ {
unsigned long next_time;
unsigned long now_time;
next->tm_year = now->tm_year; next->tm_year = now->tm_year;
next->tm_mon = now->tm_mon; next->tm_mon = now->tm_mon;
next->tm_mday = now->tm_mday; next->tm_mday = now->tm_mday;
next->tm_hour = alrm->tm_hour; next->tm_hour = alrm->tm_hour;
next->tm_min = alrm->tm_min; next->tm_min = alrm->tm_min;
next->tm_sec = alrm->tm_sec; next->tm_sec = alrm->tm_sec;
rtc_tm_to_time(now, &now_time);
rtc_tm_to_time(next, &next_time);
if (next_time < now_time) {
/* Advance one day */
next_time += 60 * 60 * 24;
rtc_time_to_tm(next_time, next);
}
} }
static inline int rtc_read_time(struct rtc_ops *ops, struct rtc_time *tm) static inline int rtc_read_time(struct rtc_ops *ops, struct rtc_time *tm)