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ntp/pps: use timespec64 for hardpps()

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There is only one user of the hardpps function in the kernel, so
it makes sense to atomically change it over to using 64-bit
timestamps for y2038 safety. In the hardpps implementation,
we also need to change the pps_normtime structure, which is
similar to struct timespec and also requires a 64-bit
seconds portion.

This introduces two temporary variables in pps_kc_event() to
do the conversion, they will be removed again in the next step,
which seemed preferable to having a larger patch changing it
all at the same time.

Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
Arnd Bergmann
2015-09-28 22:21:28 +02:00
committed by John Stultz
parent 9ffecb1028
commit 7ec88e4be4
5 changed files with 12 additions and 10 deletions
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4
drivers/pps/kc.c
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@@ -113,10 +113,12 @@ void pps_kc_event(struct pps_device *pps, struct pps_event_time *ts,
int event)
{
unsigned long flags;
struct timespec64 real = timespec_to_timespec64(ts->ts_real);
struct timespec64 raw = timespec_to_timespec64(ts->ts_raw);
/* Pass some events to kernel consumer if activated */
spin_lock_irqsave(&pps_kc_hardpps_lock, flags);
if (pps == pps_kc_hardpps_dev && event & pps_kc_hardpps_mode)
hardpps(&ts->ts_real, &ts->ts_raw);
hardpps(&real, &raw);
spin_unlock_irqrestore(&pps_kc_hardpps_lock, flags);
}