<?xml version="1.0" encoding="ANSI_X3.4-1968" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>__class_create</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><link rel="home" href="index.html" title="Linux Device Drivers" /><link rel="up" href="ch02s02.html" title="Device Drivers Base" /><link rel="prev" href="API-syscore-resume.html" title="syscore_resume" /><link rel="next" href="API-class-destroy.html" title="class_destroy" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">__class_create</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-syscore-resume.html">Prev</a> </td><th width="60%" align="center">Device Drivers Base</th><td width="20%" align="right"> <a accesskey="n" href="API-class-destroy.html">Next</a></td></tr></table><hr /></div><div class="refentry"><a id="API---class-create"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>__class_create — create a struct class structure </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">struct class * <strong class="fsfunc">__class_create </strong>(</code></td><td>struct module * <var class="pdparam">owner</var>, </td></tr><tr><td> </td><td>const char * <var class="pdparam">name</var>, </td></tr><tr><td> </td><td>struct lock_class_key * <var class="pdparam">key</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a id="idm140404964556384"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>owner</code></em></span></dt><dd><p> pointer to the module that is to <span class="quote">“<span class="quote">own</span>”</span> this struct class </p></dd><dt><span class="term"><em class="parameter"><code>name</code></em></span></dt><dd><p> pointer to a string for the name of this class. </p></dd><dt><span class="term"><em class="parameter"><code>key</code></em></span></dt><dd><p> the lock_class_key for this class; used by mutex lock debugging </p></dd></dl></div></div><div class="refsect1"><a id="idm140404964548688"></a><h2>Description</h2><p> This is used to create a struct class pointer that can then be used in calls to <code class="function">device_create</code>. </p><p> Returns <span class="structname">struct class</span> pointer on success, or <code class="function">ERR_PTR</code> on error. </p><p> Note, the pointer created here is to be destroyed when finished by making a call to <code class="function">class_destroy</code>. </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-syscore-resume.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch02s02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="API-class-destroy.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">syscore_resume</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span class="phrase">class_destroy</span></td></tr></table></div></body></html>