From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 19 Dec 2023 15:48:49 +0000 (+0900)
Subject: time-util: make usleep_safe() return earlier if 0 is passed
X-Git-Tag: v256-rc1~1455^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=97df9fa065767cbedadd144b0e1b193a95e7ffbd;p=thirdparty%2Fsystemd.git

time-util: make usleep_safe() return earlier if 0 is passed
---

diff --git a/src/basic/time-util.h b/src/basic/time-util.h
index ed4c1aabd48..29373477f48 100644
--- a/src/basic/time-util.h
+++ b/src/basic/time-util.h
@@ -219,6 +219,9 @@ static inline int usleep_safe(usec_t usec) {
          * ⚠️ Note we are not using plain nanosleep() here, since that operates on CLOCK_REALTIME, not
          *    CLOCK_MONOTONIC! */
 
+        if (usec == 0)
+                return 0;
+
         // FIXME: use RET_NERRNO() macro here. Currently, this header cannot include errno-util.h.
         return clock_nanosleep(CLOCK_MONOTONIC, 0, TIMESPEC_STORE(usec), NULL) < 0 ? -errno : 0;
 }