ntp/pps: use y2038 safe types in pps_event_time

The pps_event_time uses two 'timespec' structures internally, which
suffer from the y2038 problem. The uses of this structure are
fairly self-contained in the pps code, so this replaces them all at
once.

Unfortunately, this includes the sfc ethernet driver aside from the
pps subsystem, so we change that one as well. Both touch the
same data structure, and there probably is no good way to split
the patch into smaller units.

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>

2 files changed, 3 insertions, 5 deletions

diff --git a/drivers/pps/kapi.c b/drivers/pps/kapi.c
index cdad4d95b20e..805c749ac1ad 100644
--- a/drivers/pps/kapi.c
+++ b/drivers/pps/kapi.c
@@ -179,8 +179,8 @@ void pps_event(struct pps_device *pps, struct pps_event_time *ts, int event,
         /* check event type */
         BUG_ON((event & (PPS_CAPTUREASSERT | PPS_CAPTURECLEAR)) == 0);
 
-        dev_dbg(pps->dev, "PPS event at %ld.%09ld\n",
-                        ts->ts_real.tv_sec, ts->ts_real.tv_nsec);
+        dev_dbg(pps->dev, "PPS event at %lld.%09ld\n",
+                        (s64)ts->ts_real.tv_sec, ts->ts_real.tv_nsec);
 
         timespec_to_pps_ktime(&ts_real, ts->ts_real);
 
diff --git a/drivers/pps/kc.c b/drivers/pps/kc.c
index a16cea2ba980..e219db1f1c84 100644
--- a/drivers/pps/kc.c
+++ b/drivers/pps/kc.c
@@ -113,12 +113,10 @@ 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(&real, &raw);
+                hardpps(&ts->ts_real, &ts->ts_raw);
         spin_unlock_irqrestore(&pps_kc_hardpps_lock, flags);
 }