1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>usb_init_urb</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="The Linux-USB Host Side API"><link rel="up" href="usbcore.html" title="Chapter&#160;5.&#160;USB Core APIs"><link rel="prev" href="usbcore.html" title="Chapter&#160;5.&#160;USB Core APIs"><link rel="next" href="API-usb-alloc-urb.html" title="usb_alloc_urb"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">usb_init_urb</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="usbcore.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;5.&#160;USB Core APIs</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-usb-alloc-urb.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-usb-init-urb"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>usb_init_urb &#8212; 
2  initializes a urb so that it can be used by a USB driver
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <b class="fsfunc">usb_init_urb </b>(</code></td><td>struct urb * <var class="pdparam">urb</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1115931804"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>urb</code></em></span></dt><dd><p>
4     pointer to the urb to initialize
5    </p></dd></dl></div></div><div class="refsect1"><a name="idp1115933380"></a><h2>Description</h2><p>
6   Initializes a urb so that the USB subsystem can use it properly.
7   </p><p>
8
9   If a urb is created with a call to <code class="function">usb_alloc_urb</code> it is not
10   necessary to call this function.  Only use this if you allocate the
11   space for a struct urb on your own.  If you call this function, be
12   careful when freeing the memory for your urb that it is no longer in
13   use by the USB core.
14   </p><p>
15
16   Only use this function if you _really_ understand what you are doing.
17</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="usbcore.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="usbcore.html">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-usb-alloc-urb.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter&#160;5.&#160;USB Core APIs&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;<span class="phrase">usb_alloc_urb</span></td></tr></table></div></body></html>
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