1<html><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 bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><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>&#160;</td><th width="60%" align="center">Device Drivers Base</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-class-destroy.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API---class-create"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>__class_create &#8212; 
2  create a struct class structure
3 </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 * <b class="fsfunc">__class_create </b>(</code></td><td>struct module * <var class="pdparam">owner</var>, </td></tr><tr><td>&#160;</td><td>const char * <var class="pdparam">name</var>, </td></tr><tr><td>&#160;</td><td>struct lock_class_key * <var class="pdparam">key</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1109527172"></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>
4     pointer to the module that is to <span class="quote">&#8220;<span class="quote">own</span>&#8221;</span> this struct class
5    </p></dd><dt><span class="term"><em class="parameter"><code>name</code></em></span></dt><dd><p>
6     pointer to a string for the name of this class.
7    </p></dd><dt><span class="term"><em class="parameter"><code>key</code></em></span></dt><dd><p>
8     the lock_class_key for this class; used by mutex lock debugging
9    </p></dd></dl></div></div><div class="refsect1"><a name="idp1109531140"></a><h2>Description</h2><p>
10   This is used to create a struct class pointer that can then be used
11   in calls to <code class="function">device_create</code>.
12   </p><p>
13
14   Returns <span class="structname">struct class</span> pointer on success, or <code class="function">ERR_PTR</code> on error.
15   </p><p>
16
17   Note, the pointer created here is to be destroyed when finished by
18   making a call to <code class="function">class_destroy</code>.
19</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>&#160;</td><td width="20%" align="center"><a accesskey="u" href="ch02s02.html">Up</a></td><td width="40%" align="right">&#160;<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>&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;<span class="phrase">class_destroy</span></td></tr></table></div></body></html>
20