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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>pci_dev_present</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="The Linux Kernel API" /><link rel="up" href="ch09s05.html" title="PCI Support Library" /><link rel="prev" href="re388.html" title="pci_get_class" /><link rel="next" href="re390.html" title="pci_enable_msi_block" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>pci_dev_present</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re388.html">Prev</a> </td><th width="60%" align="center">PCI Support Library</th><td width="20%" align="right"> <a accesskey="n" href="re390.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="pci_dev_present"><a id="API-pci-dev-present"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>pci_dev_present —
Returns 1 if device matching the device list is present, 0 if not.
</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 <b class="fsfunc">pci_dev_present </b>(</code></td><td>const struct pci_device_id * <var class="pdparam">ids</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2678027"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>ids</code></em></span></dt><dd><p>
A pointer to a null terminated list of struct pci_device_id structures
that describe the type of PCI device the caller is trying to find.
</p></dd></dl></div></div><div class="refsect1" title="Obvious fact"><a id="id2678056"></a><h2>Obvious fact</h2><p>
You do not have a reference to any device that might be found
by this function, so if that device is removed from the system right after
this function is finished, the value will be stale. Use this function to
find devices that are usually built into a system, or for a general hint as
to if another device happens to be present at this specific moment in time.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re388.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch09s05.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re390.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>pci_get_class</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>pci_enable_msi_block</span></td></tr></table></div></body></html>
