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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_reset_function</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="re364.html" title="__pci_reset_function" /><link rel="next" href="re366.html" title="pcix_get_max_mmrbc" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>pci_reset_function</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re364.html">Prev</a> </td><th width="60%" align="center">PCI Support Library</th><td width="20%" align="right"> <a accesskey="n" href="re366.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="pci_reset_function"><a id="API-pci-reset-function"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>pci_reset_function —
quiesce and reset a PCI device function
</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_reset_function </b>(</code></td><td>struct pci_dev * <var class="pdparam">dev</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2674274"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>dev</code></em></span></dt><dd><p>
PCI device to reset
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2674301"></a><h2>Description</h2><p>
Some devices allow an individual function to be reset without affecting
other functions in the same device. The PCI device must be responsive
to PCI config space in order to use this function.
</p><p>
This function does not just reset the PCI portion of a device, but
clears all the state associated with the device. This function differs
from __pci_reset_function in that it saves and restores device state
over the reset.
</p><p>
Returns 0 if the device function was successfully reset or negative if the
device doesn't support resetting a single function.
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