1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>i2c_verify_client</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="i2c.html" title="Chapter&#160;10.&#160;I2C and SMBus Subsystem"><link rel="prev" href="API-i2c-register-board-info.html" title="i2c_register_board_info"><link rel="next" href="API-i2c-lock-adapter.html" title="i2c_lock_adapter"></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">i2c_verify_client</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-i2c-register-board-info.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;10.&#160;I<sup>2</sup>C and SMBus Subsystem</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-i2c-lock-adapter.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-i2c-verify-client"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>i2c_verify_client &#8212; 
2  return parameter as i2c_client, or NULL
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 i2c_client * <b class="fsfunc">i2c_verify_client </b>(</code></td><td>struct device * <var class="pdparam">dev</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1115331388"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>dev</code></em></span></dt><dd><p>
4     device, probably from some driver model iterator
5    </p></dd></dl></div></div><div class="refsect1"><a name="idp1115333012"></a><h2>Description</h2><p>
6   When traversing the driver model tree, perhaps using driver model
7   iterators like <em class="parameter"><code>device_for_each_child</code></em>(), you can't assume very much
8   about the nodes you find.  Use this function to avoid oopses caused
9   by wrongly treating some non-I2C device as an i2c_client.
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