From e49a29f2dc306213a73a4f3c68d1ac9a34f49d9a Mon Sep 17 00:00:00 2001
From: aozima <wuyangyong@gmail.com>
Date: Mon, 2 Jul 2018 09:56:12 +0800
Subject: [PATCH] [shell] add re-initial check.

---
 components/finsh/shell.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/components/finsh/shell.c b/components/finsh/shell.c
index 6bdb41812..66a0141de 100644
--- a/components/finsh/shell.c
+++ b/components/finsh/shell.c
@@ -726,6 +726,12 @@ int finsh_system_init(void)
     rt_err_t result = RT_EOK;
     rt_thread_t tid;
 
+    if(shell)
+    {
+        rt_kprintf("finsh shell already init.\n");
+        return RT_EOK;
+    }
+
 #ifdef FINSH_USING_SYMTAB
 #ifdef __CC_ARM                 /* ARM C Compiler */
     extern const int FSymTab$$Base;
-- 
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