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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>devres_open_group</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="Linux Device Drivers" /><link rel="up" href="ch01s09.html" title="Device Resource Management" /><link rel="prev" href="re160.html" title="devres_destroy" /><link rel="next" href="re162.html" title="devres_close_group" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>devres_open_group</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re160.html">Prev</a> </td><th width="60%" align="center">Device Resource Management</th><td width="20%" align="right"> <a accesskey="n" href="re162.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="devres_open_group"><a id="API-devres-open-group"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>devres_open_group —
Open a new devres group
</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">void * <b class="fsfunc">devres_open_group </b>(</code></td><td>struct device * <var class="pdparam">dev</var>, </td></tr><tr><td> </td><td>void * <var class="pdparam">id</var>, </td></tr><tr><td> </td><td>gfp_t <var class="pdparam">gfp</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id3047405"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>dev</code></em></span></dt><dd><p>
Device to open devres group for
</p></dd><dt><span class="term"><em class="parameter"><code>id</code></em></span></dt><dd><p>
Separator ID
</p></dd><dt><span class="term"><em class="parameter"><code>gfp</code></em></span></dt><dd><p>
Allocation flags
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id3047465"></a><h2>Description</h2><p>
Open a new devres group for <em class="parameter"><code>dev</code></em> with <em class="parameter"><code>id</code></em>. For <em class="parameter"><code>id</code></em>, using a
pointer to an object which won't be used for another group is
recommended. If <em class="parameter"><code>id</code></em> is NULL, address-wise unique ID is created.
</p></div><div class="refsect1" title="RETURNS"><a id="id3047501"></a><h2>RETURNS</h2><p>
ID of the new group, NULL on failure.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re160.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch01s09.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re162.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>devres_destroy</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>devres_close_group</span></td></tr></table></div></body></html>
