This line is incorrect. You need to learn how kmalloc (or any *alloc for that matter) works because it seems like you don't realise what is happening with this statement.<br><br>memory_buffer <span class="sy0">=</span> kmalloc<span class="br0">(</span><span class="nu0">1</span><span class="sy0">,</span> GFP_KERNEL<span class="br0">)</span><span class="sy0">;<br>
<br></span><br><div class="gmail_quote">On Mon, May 9, 2011 at 1:26 PM, Aravind Vijayan <span dir="ltr"><<a href="mailto:aravind1123@gmail.com">aravind1123@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Hi all,<br>
Let me begin this post with thanx all to whom help me on<br>
previous problem.I have completed jobs such as<br>
writing,making,inserting the module.<br>
<br>
i create a character special file using mknod in /dev directory.<br>
<br>
i try to write data to my file by" echo -n "abcd" > /dev/memory "<br>
<br>
and when i try to read from that file i get the last char was written<br>
to that file that is "d"<br>
<br>
here is my code:<a href="http://pastebin.com/9YsJetek" target="_blank">http://pastebin.com/9YsJetek</a><br>
<br>
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</blockquote></div><br><br clear="all"><br>-- <br>/manohar<br>