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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>i2o_msg_nop</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="Linux Device Drivers" /><link rel="up" href="ch04s02.html" title="I2O message devices" /><link rel="prev" href="re428.html" title="i2o_msg_nop_mfa" /><link rel="next" href="re430.html" title="i2o_flush_reply" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>i2o_msg_nop</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re428.html">Prev</a> </td><th width="60%" align="center">I2O message devices</th><td width="20%" align="right"> <a accesskey="n" href="re430.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="i2o_msg_nop"><a id="API-i2o-msg-nop"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>i2o_msg_nop —
Returns a message which is not used
</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">void <b class="fsfunc">i2o_msg_nop </b>(</code></td><td>struct i2o_controller * <var class="pdparam">c</var>, </td></tr><tr><td> </td><td>struct i2o_message * <var class="pdparam">msg</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2657677"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>c</code></em></span></dt><dd><p>
I2O controller from which the message was created
</p></dd><dt><span class="term"><em class="parameter"><code>msg</code></em></span></dt><dd><p>
message which should be returned
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2657721"></a><h2>Description</h2><p>
If you fetch a message via i2o_msg_get, and can't use it, you must
return the message with this function. Otherwise the MFA is lost as well
as the allocated memory from the mempool.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re428.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch04s02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re430.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>i2o_msg_nop_mfa</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>i2o_flush_reply</span></td></tr></table></div></body></html>
