1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>of_mdio_find_bus</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux Networking and Network Devices APIs"><link rel="up" href="ch02s02.html" title="PHY Support"><link rel="prev" href="API-devm-mdiobus-free.html" title="devm_mdiobus_free"><link rel="next" href="API-mdiobus-register.html" title="mdiobus_register"></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">of_mdio_find_bus</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-devm-mdiobus-free.html">Prev</a>&#160;</td><th width="60%" align="center">PHY Support</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-mdiobus-register.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-of-mdio-find-bus"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>of_mdio_find_bus &#8212; 
2     Given an mii_bus node, find the mii_bus.
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 mii_bus * <b class="fsfunc">of_mdio_find_bus </b>(</code></td><td>struct device_node * <var class="pdparam">mdio_bus_np</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1099492660"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>mdio_bus_np</code></em></span></dt><dd><p>
4     Pointer to the mii_bus.
5    </p></dd></dl></div></div><div class="refsect1"><a name="idp1099494276"></a><h2>Description</h2><p>
6   Returns a pointer to the mii_bus, or NULL if none found.
7   </p><p>
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9   Because the association of a device_node and mii_bus is made via
10   <code class="function">of_mdiobus_register</code>, the mii_bus cannot be found before it is
11   registered with <code class="function">of_mdiobus_register</code>.
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