From: Miroslav Lichvar <mlichvar@redhat.com>
Date: Wed, 11 May 2022 09:53:07 +0000 (+0200)
Subject: refclock: set minimum maxlockage in local mode
X-Git-Tag: 4.3-pre1~38
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a0a496dcb423387e5faa3ab41e14dd6cf7743776;p=thirdparty%2Fchrony.git

refclock: set minimum maxlockage in local mode

Use 3 as the minimum maxlockage in the local mode to avoid disruptions
due to losing the lock when a single sample is missed, e.g. when the PPS
driver polling interval is slightly longer than the pulse interval and a
pulse is skipped.
---

diff --git a/refclock.c b/refclock.c
index b59acc35..e91828aa 100644
--- a/refclock.c
+++ b/refclock.c
@@ -237,6 +237,7 @@ RCL_AddRefclock(RefclockParameters *params)
     inst->pps_forced = 1;
     inst->lock_ref = inst->ref_id;
     inst->leap_status = LEAP_Unsynchronised;
+    inst->max_lock_age = MAX(inst->max_lock_age, 3);
   }
 
   if (inst->driver->poll) {