rtc: Update interface.c to use y2038-safe time interfaces
Currently, interface.c uses y2038 problematic rtc_tm_to_time()
and rtc_time_to_tm(). So replace them with their corresponding
y2038-safe versions: rtc_tm_to_time64() and rtc_time64_to_tm().
Cc: pang.xunlei <pang.xunlei@linaro.org>
Cc: Arnd Bergmann <arnd.bergmann@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Xunlei Pang <pang.xunlei@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 45bfc28ee..37215cf 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -73,10 +73,8 @@
else if (rtc->ops->set_time)
err = rtc->ops->set_time(rtc->dev.parent, tm);
else if (rtc->ops->set_mmss) {
- unsigned long secs;
- err = rtc_tm_to_time(tm, &secs);
- if (err == 0)
- err = rtc->ops->set_mmss(rtc->dev.parent, secs);
+ time64_t secs64 = rtc_tm_to_time64(tm);
+ err = rtc->ops->set_mmss(rtc->dev.parent, secs64);
} else
err = -EINVAL;
@@ -105,7 +103,7 @@
err = rtc->ops->read_time(rtc->dev.parent, &old);
if (err == 0) {
- rtc_time_to_tm(secs, &new);
+ rtc_time64_to_tm(secs, &new);
/*
* avoid writing when we're going to change the day of
@@ -157,7 +155,7 @@
int err;
struct rtc_time before, now;
int first_time = 1;
- unsigned long t_now, t_alm;
+ time64_t t_now, t_alm;
enum { none, day, month, year } missing = none;
unsigned days;
@@ -258,8 +256,8 @@
}
/* with luck, no rollover is needed */
- rtc_tm_to_time(&now, &t_now);
- rtc_tm_to_time(&alarm->time, &t_alm);
+ t_now = rtc_tm_to_time64(&now);
+ t_alm = rtc_tm_to_time64(&alarm->time);
if (t_now < t_alm)
goto done;
@@ -273,7 +271,7 @@
case day:
dev_dbg(&rtc->dev, "alarm rollover: %s\n", "day");
t_alm += 24 * 60 * 60;
- rtc_time_to_tm(t_alm, &alarm->time);
+ rtc_time64_to_tm(t_alm, &alarm->time);
break;
/* Month rollover ... if it's the 31th, an alarm on the 3rd will
@@ -346,19 +344,19 @@
static int __rtc_set_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
{
struct rtc_time tm;
- long now, scheduled;
+ time64_t now, scheduled;
int err;
err = rtc_valid_tm(&alarm->time);
if (err)
return err;
- rtc_tm_to_time(&alarm->time, &scheduled);
+ scheduled = rtc_tm_to_time64(&alarm->time);
/* Make sure we're not setting alarms in the past */
err = __rtc_read_time(rtc, &tm);
if (err)
return err;
- rtc_tm_to_time(&tm, &now);
+ now = rtc_tm_to_time64(&tm);
if (scheduled <= now)
return -ETIME;
/*