[DFS] "console" device check.
[DFS] To make sure the "console" device exist or not when initialize
console device.
@@ -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)
{
