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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>rio_chk_dev_route</title><meta name="generator" content="DocBook XSL Stylesheets V1.76.1" /><link rel="home" href="index.html" title="RapidIO Subsystem Guide" /><link rel="up" href="Driver_functionality.html" title="Driver functionality" /><link rel="prev" href="API-rio-set-port-lockout.html" title="rio_set_port_lockout" /><link rel="next" href="API-rio-mport-chk-dev-access.html" title="rio_mport_chk_dev_access" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>rio_chk_dev_route</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-rio-set-port-lockout.html">Prev</a> </td><th width="60%" align="center">Driver functionality</th><td width="20%" align="right"> <a accesskey="n" href="API-rio-mport-chk-dev-access.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="rio_chk_dev_route"><a id="API-rio-chk-dev-route"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>rio_chk_dev_route —
Validate route to the specified device.
</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">int <strong>fsfuncrio_chk_dev_route </strong>(</code></td><td>struct rio_dev * <var class="pdparam">rdev</var>, </td></tr><tr><td> </td><td>struct rio_dev ** <var class="pdparam">nrdev</var>, </td></tr><tr><td> </td><td>int * <var class="pdparam">npnum</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2996600"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>rdev</code></em></span></dt><dd><p>
RIO device failed to respond
</p></dd><dt><span class="term"><em class="parameter"><code>nrdev</code></em></span></dt><dd><p>
Last active device on the route to rdev
</p></dd><dt><span class="term"><em class="parameter"><code>npnum</code></em></span></dt><dd><p>
nrdev's port number on the route to rdev
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2996659"></a><h2>Description</h2><p>
Follows a route to the specified RIO device to determine the last available
device (and corresponding RIO port) on the route.
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