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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>usb_gadget_unregister_driver</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="USB Gadget API for Linux" /><link rel="up" href="ch03s03.html" title="Core Objects and Methods" /><link rel="prev" href="re42.html" title="usb_gadget_register_driver" /><link rel="next" href="re44.html" title="struct usb_string" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>usb_gadget_unregister_driver</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re42.html">Prev</a> </td><th width="60%" align="center">Core Objects and Methods</th><td width="20%" align="right"> <a accesskey="n" href="re44.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="usb_gadget_unregister_driver"><a id="API-usb-gadget-unregister-driver"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>usb_gadget_unregister_driver —
unregister a gadget driver
</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">usb_gadget_unregister_driver </b>(</code></td><td>struct usb_gadget_driver * <var class="pdparam">driver</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2996420"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>driver</code></em></span></dt><dd><p>
the driver being unregistered
</p></dd></dl></div></div><div class="refsect1" title="Context"><a id="id2996446"></a><h2>Context</h2><p>
can sleep
</p></div><div class="refsect1" title="Description"><a id="id2996456"></a><h2>Description</h2><p>
Call this in your gadget driver's module cleanup function,
to tell the underlying usb controller that your driver is
going away. If the controller is connected to a USB host,
it will first <code class="function">disconnect</code>. The driver is also requested
to <code class="function">unbind</code> and clean up any device state, before this procedure
finally returns. It's expected that the <code class="function">unbind</code> functions
will in in exit sections, so may not be linked in some kernels.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re42.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch03s03.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re44.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>usb_gadget_register_driver</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>struct usb_string</span></td></tr></table></div></body></html>
