1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>acpi_scan_drop_device</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux Device Drivers"><link rel="up" href="ch02s05.html" title="Device Drivers ACPI Support"><link rel="prev" href="API-acpi-of-match-device.html" title="acpi_of_match_device"><link rel="next" href="ch02s06.html" title="Device drivers PnP support"></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">acpi_scan_drop_device</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-acpi-of-match-device.html">Prev</a>&#160;</td><th width="60%" align="center">Device Drivers ACPI Support</th><td width="20%" align="right">&#160;<a accesskey="n" href="ch02s06.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-acpi-scan-drop-device"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>acpi_scan_drop_device &#8212; 
2     Drop an ACPI device object.
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">acpi_scan_drop_device </b>(</code></td><td>acpi_handle <var class="pdparam">handle</var>, </td></tr><tr><td>&#160;</td><td>void * <var class="pdparam">context</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1110736772"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>handle</code></em></span></dt><dd><p>
4     Handle of an ACPI namespace node, not used.
5    </p></dd><dt><span class="term"><em class="parameter"><code>context</code></em></span></dt><dd><p>
6     Address of the ACPI device object to drop.
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1110739460"></a><h2>Description</h2><p>
8   This is invoked by <code class="function">acpi_ns_delete_node</code> during the removal of the ACPI
9   namespace node the device object pointed to by <em class="parameter"><code>context</code></em> is attached to.
10   </p><p>
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12   The unregistration is carried out asynchronously to avoid running
13   <code class="function">acpi_device_del</code> under the ACPICA's namespace mutex and the list is used to
14   ensure the correct ordering (the device objects must be unregistered in the
15   same order in which the corresponding namespace nodes are deleted).
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