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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>module_exit</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="ch01.html#id2982451" title="Driver Entry and Exit points" /><link rel="prev" href="re01.html" title="module_init" /><link rel="next" href="ch01s02.html" title="Atomic and pointer manipulation" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>module_exit</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re01.html">Prev</a> </td><th width="60%" align="center">Driver Entry and Exit points</th><td width="20%" align="right"> <a accesskey="n" href="ch01s02.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="module_exit"><a id="API-module-exit"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>module_exit —
driver exit entry point
</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"> <b class="fsfunc">module_exit </b>(</code></td><td> <var class="pdparam">x</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2977180"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>x</code></em></span></dt><dd><p>
function to be run when driver is removed
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2977207"></a><h2>Description</h2><p>
<code class="function">module_exit</code> will wrap the driver clean-up code
with <code class="function">cleanup_module</code> when used with rmmod when
the driver is a module. If the driver is statically
compiled into the kernel, <code class="function">module_exit</code> has no effect.
There can only be one per module.
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