From 541126f26d15ffc1231e311c512dfb90b0c88774 Mon Sep 17 00:00:00 2001
From: Abtin Keshavarzian <abtink@google.com>
Date: Mon, 20 Sep 2021 13:24:40 -0700
Subject: [PATCH] [mac] remove unnecessary cast of `mMode2KeyMaterial` to
 `KeyMaterial` (#7020)

---
 src/core/mac/mac.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/core/mac/mac.cpp b/src/core/mac/mac.cpp
index 546e8db8e..777758700 100644
--- a/src/core/mac/mac.cpp
+++ b/src/core/mac/mac.cpp
@@ -1001,7 +1001,8 @@ void Mac::ProcessTransmitSecurity(TxFrame &aFrame)
     case Frame::kKeyIdMode2:
     {
         const uint8_t keySource[] = {0xff, 0xff, 0xff, 0xff};
-        aFrame.SetAesKey(static_cast<const KeyMaterial &>(mMode2KeyMaterial));
+
+        aFrame.SetAesKey(mMode2KeyMaterial);
 
         mKeyIdMode2FrameCounter++;
         aFrame.SetFrameCounter(mKeyIdMode2FrameCounter);
@@ -1700,7 +1701,7 @@ Error Mac::ProcessReceiveSecurity(RxFrame &aFrame, const Address &aSrcAddr, Neig
         break;
 
     case Frame::kKeyIdMode2:
-        macKey     = static_cast<const KeyMaterial *>(&mMode2KeyMaterial);
+        macKey     = &mMode2KeyMaterial;
         extAddress = static_cast<const ExtAddress *>(&sMode2ExtAddress);
         break;