From: Alexander GQ Gerasiov <g...@cs.msu.su>
In case pps_dec_valid() is called from second_overflow() in the
absence of pps signal, there is no need to decrease pps_valid.
Signed-off-by: Alexander GQ Gerasiov <g...@cs.msu.su>
---
kernel/time/ntp.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index d20891e..22f2235 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -154,6 +154,10 @@ static inline void pps_clear(void)
*/
static inline void pps_dec_valid(void)
{
+ /* Silently ignore if PPS was not turned on */
+ if (!(time_status & STA_PPSSIGNAL))
+ return;
+
if (pps_valid > 0)
pps_valid--;
else {
--
2.1.4
