[PATCH] doubt about fwrite

[wei peng]

hi~

  I connected the target board to terminal via "telnet" ,  in some cases the terminal will be frozen. Here are detailed steps:

1. Enable "CONFIG_IOB_DEBUG"[necessary].
2. New two terminals and connect to target board via "telnet".
3. Input "dmesg" command,and the terminal will show information continuously.[two terminals are same][necessary]
4. Close one of  the terminals,and the other one will be frozen.but the system is work on.

I debug the system and repaired the bug,the file named commit.txt is  detailed steps.

[Gregory Nutt]

Forwarded to d...@nuttx.apache.org.  Please refer to https://groups.google.com/forum/#!topic/nuttx/ISmgZAftm4o (first and second posts).

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