From 6e63cbb9be9f2c6fa8d1b05f47976527c306bfff Mon Sep 17 00:00:00 2001
From: bernard <bernard.xiong@rt-thread.com>
Date: Thu, 15 Jun 2017 14:36:40 +0800
Subject: [PATCH] [DFS] "console" device check.

[DFS] To make sure the "console" device exist or not when initialize
console device.
---
 components/dfs/filesystems/devfs/console.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/components/dfs/filesystems/devfs/console.c b/components/dfs/filesystems/devfs/console.c
index e3302e4268..8c782fe6a2 100644
--- a/components/dfs/filesystems/devfs/console.c
+++ b/components/dfs/filesystems/devfs/console.c
@@ -78,6 +78,9 @@ void rt_console_init(const char* device_name)
 	rt_device_t device;
 	/* register to device framework */
 
+	device = rt_device_find("console");
+	if (device) return; /* not register a same name device */
+
 	device = rt_device_find(device_name);
 	if (device != RT_NULL)
 	{