From ad1387b2fdcb1cd70adbcdd78a9c99d7db9058a6 Mon Sep 17 00:00:00 2001
From: Ilia Penev <penev.ilia@gmail.com>
Date: Mon, 21 Oct 2019 00:48:22 +0300
Subject: [PATCH] Fix Quectel M26 context hang

---
 features/cellular/framework/targets/QUECTEL/M26/QUECTEL_M26.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/features/cellular/framework/targets/QUECTEL/M26/QUECTEL_M26.cpp b/features/cellular/framework/targets/QUECTEL/M26/QUECTEL_M26.cpp
index bbec885d7a..e198547a0c 100644
--- a/features/cellular/framework/targets/QUECTEL/M26/QUECTEL_M26.cpp
+++ b/features/cellular/framework/targets/QUECTEL/M26/QUECTEL_M26.cpp
@@ -54,6 +54,7 @@ nsapi_error_t QUECTEL_M26::get_sim_state(SimState &state)
     _at->lock();
     nsapi_error_t err = _at->at_cmd_str("+CPIN", "?", buf, 13);
     tr_debug("CPIN: %s", buf);
+    _at->unlock();
 
     if (memcmp(buf, "READY", 5) == 0) {
         state = SimStateReady;