1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>hcd_buffer_create</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="hcd.html" title="Chapter&#160;6.&#160;Host Controller APIs"><link rel="prev" href="API-usb-hcd-pci-shutdown.html" title="usb_hcd_pci_shutdown"><link rel="next" href="API-hcd-buffer-destroy.html" title="hcd_buffer_destroy"></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">hcd_buffer_create</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-usb-hcd-pci-shutdown.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;6.&#160;Host Controller APIs</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-hcd-buffer-destroy.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-hcd-buffer-create"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>hcd_buffer_create &#8212; 
2  initialize buffer pools
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">int <b class="fsfunc">hcd_buffer_create </b>(</code></td><td>struct usb_hcd * <var class="pdparam">hcd</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1116906484"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>hcd</code></em></span></dt><dd><p>
4     the bus whose buffer pools are to be initialized
5    </p></dd></dl></div></div><div class="refsect1"><a name="idp1116908108"></a><h2>Context</h2><p>
6   !<code class="function">in_interrupt</code>
7</p></div><div class="refsect1"><a name="idp1116909068"></a><h2>Description</h2><p>
8   Call this as part of initializing a host controller that uses the dma
9   memory allocators.  It initializes some pools of dma-coherent memory that
10   will be shared by all drivers using that controller.
11   </p><p>
12
13   Call <code class="function">hcd_buffer_destroy</code> to clean up after using those pools.
14</p></div><div class="refsect1"><a name="idp1116910420"></a><h2>Return</h2><p>
15   0 if successful. A negative errno value otherwise.
16</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-usb-hcd-pci-shutdown.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="hcd.html">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-hcd-buffer-destroy.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">usb_hcd_pci_shutdown</span>&#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">hcd_buffer_destroy</span></td></tr></table></div></body></html>
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