From 5c13cec30bf174c6c836bccfff67d06adadfd041 Mon Sep 17 00:00:00 2001
From: Jiacheng Guo <gjc@google.com>
Date: Fri, 19 Jun 2020 11:27:14 +0800
Subject: [PATCH] [posix] only update timeout with a lower value (#5119)

---
 src/posix/platform/alarm.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/posix/platform/alarm.cpp b/src/posix/platform/alarm.cpp
index dd5d47e90..fc28af936 100644
--- a/src/posix/platform/alarm.cpp
+++ b/src/posix/platform/alarm.cpp
@@ -159,8 +159,11 @@ exit:
             remaining = 1;
         }
 
-        aTimeout->tv_sec  = (time_t)(remaining / US_PER_S);
-        aTimeout->tv_usec = remaining % US_PER_S;
+        if (remaining < aTimeout->tv_sec * US_PER_S + aTimeout->tv_usec)
+        {
+            aTimeout->tv_sec  = static_cast<time_t>(remaining / US_PER_S);
+            aTimeout->tv_usec = static_cast<suseconds_t>(remaining % US_PER_S);
+        }
     }
 }