From 76b5270d8f1459ee9fbc511fe52b2408b16bc288 Mon Sep 17 00:00:00 2001
From: kangping <wgtdkp@google.com>
Date: Wed, 10 Jun 2020 01:47:25 +0800
Subject: [PATCH] [posix] fix spinel radio state transition (#5068)

---
 src/lib/spinel/radio_spinel_impl.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/lib/spinel/radio_spinel_impl.hpp b/src/lib/spinel/radio_spinel_impl.hpp
index ff5334422..a4b0e75b6 100644
--- a/src/lib/spinel/radio_spinel_impl.hpp
+++ b/src/lib/spinel/radio_spinel_impl.hpp
@@ -1502,7 +1502,8 @@ otError RadioSpinel<InterfaceType, ProcessContextType>::Transmit(otRadioFrame &a
 {
     otError error = OT_ERROR_INVALID_STATE;
 
-    VerifyOrExit(mState == kStateReceive, OT_NOOP);
+    VerifyOrExit(mState == kStateReceive || (mState == kStateSleep && (mRadioCaps & OT_RADIO_CAPS_SLEEP_TO_TX)),
+                 OT_NOOP);
 
     mTransmitFrame = &aFrame;