From 96b7988511fdf188e7ed995b030c2ede40c7a38b Mon Sep 17 00:00:00 2001
From: Jue <me@jue.yt>
Date: Thu, 3 Nov 2022 14:03:03 +0100
Subject: [PATCH] ztimer/periodic: acquire resp. release used ztimer clock

---
 sys/ztimer/periodic.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sys/ztimer/periodic.c b/sys/ztimer/periodic.c
index 496a4f0a6f..5d9d8e9ef9 100644
--- a/sys/ztimer/periodic.c
+++ b/sys/ztimer/periodic.c
@@ -68,6 +68,8 @@ void ztimer_periodic_init(ztimer_clock_t *clock, ztimer_periodic_t *timer,
 
 void ztimer_periodic_start(ztimer_periodic_t *timer)
 {
+    ztimer_acquire(timer->clock);
+
     uint32_t now = ztimer_now(timer->clock);
 
     timer->last = now;
@@ -77,4 +79,6 @@ void ztimer_periodic_start(ztimer_periodic_t *timer)
 void ztimer_periodic_stop(ztimer_periodic_t *timer)
 {
     ztimer_remove(timer->clock, &timer->timer);
+
+    ztimer_release(timer->clock);
 }