From 6b4f8a8829197b18000db12ac2c561c940c0875f Mon Sep 17 00:00:00 2001
From: Yakun Xu <xyk@google.com>
Date: Wed, 29 May 2019 02:50:02 +0800
Subject: [PATCH] [mac] keep the second energy scan sample (#3871)

This commit fixes an issue where the second sample is skipped
because the timer had not expired yet.
---
 src/core/mac/sub_mac.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/core/mac/sub_mac.cpp b/src/core/mac/sub_mac.cpp
index 350206acf..4666c55ae 100644
--- a/src/core/mac/sub_mac.cpp
+++ b/src/core/mac/sub_mac.cpp
@@ -421,8 +421,7 @@ otError SubMac::EnergyScan(uint8_t aScanChannel, uint16_t aScanDuration)
         SetState(kStateEnergyScan);
         mEnergyScanMaxRssi = kInvalidRssiValue;
         mEnergyScanEndTime = TimerMilli::GetNow() + aScanDuration;
-        mTimer.Start(kEnergyScanRssiSampleInterval);
-        SampleRssi();
+        mTimer.Start(0);
     }
     else
     {