<?xml version="1.0" encoding="ANSI_X3.4-1968" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>pci_get_slot</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="re383.html" title="pci_find_next_bus" /><link rel="next" href="re385.html" title="pci_get_bus_and_slot" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>pci_get_slot</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re383.html">Prev</a> </td><th width="60%" align="center">PCI Support Library</th><td width="20%" align="right"> <a accesskey="n" href="re385.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="pci_get_slot"><a id="API-pci-get-slot"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>pci_get_slot — locate PCI device for a given PCI slot </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">struct pci_dev * <b class="fsfunc">pci_get_slot </b>(</code></td><td>struct pci_bus * <var class="pdparam">bus</var>, </td></tr><tr><td> </td><td>unsigned int <var class="pdparam">devfn</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2676998"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>bus</code></em></span></dt><dd><p> PCI bus on which desired PCI device resides </p></dd><dt><span class="term"><em class="parameter"><code>devfn</code></em></span></dt><dd><p> encodes number of PCI slot in which the desired PCI device resides and the logical device number within that slot in case of multi-function devices. </p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2677044"></a><h2>Description</h2><p> Given a PCI bus and slot/function number, the desired PCI device is located in the list of PCI devices. If the device is found, its reference count is increased and this function returns a pointer to its data structure. The caller must decrement the reference count by calling <code class="function">pci_dev_put</code>. If no device is found, <code class="constant">NULL</code> is returned. </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re383.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="re385.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>pci_find_next_bus</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_get_bus_and_slot</span></td></tr></table></div></body></html>