1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>usb_hcd_irq</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-bus-start-enum.html" title="usb_bus_start_enum"><link rel="next" href="API-usb-hc-died.html" title="usb_hc_died"></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_hcd_irq</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-usb-bus-start-enum.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-usb-hc-died.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-usb-hcd-irq"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>usb_hcd_irq &#8212; 
2     hook IRQs to HCD framework (bus glue)
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">irqreturn_t <b class="fsfunc">usb_hcd_irq </b>(</code></td><td>int <var class="pdparam">irq</var>, </td></tr><tr><td>&#160;</td><td>void * <var class="pdparam">__hcd</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1116817340"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>irq</code></em></span></dt><dd><p>
4     the IRQ being raised
5    </p></dd><dt><span class="term"><em class="parameter"><code>__hcd</code></em></span></dt><dd><p>
6     pointer to the HCD whose IRQ is being signaled
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1116819988"></a><h2>Description</h2><p>
8   If the controller isn't HALTed, calls the driver's irq handler.
9   Checks whether the controller is now dead.
10</p></div><div class="refsect1"><a name="idp1116820700"></a><h2>Return</h2><p>
11   <code class="constant">IRQ_HANDLED</code> if the IRQ was handled. <code class="constant">IRQ_NONE</code> otherwise.
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