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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>Registration of Device Struct</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="Writing an ALSA Driver" /><link rel="up" href="ch04.html" title="Chapter 4. PCI Resource Management" /><link rel="prev" href="ch04s03.html" title="Resource Allocation" /><link rel="next" href="ch04s05.html" title="PCI Entries" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Registration of Device Struct</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch04s03.html">Prev</a> </td><th width="60%" align="center">Chapter 4. PCI Resource Management</th><td width="20%" align="right"> <a accesskey="n" href="ch04s05.html">Next</a></td></tr></table><hr /></div><div class="section" title="Registration of Device Struct"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="pci-resource-device-struct"></a>Registration of Device Struct</h2></div></div></div><p>
At some point, typically after calling <code class="function">snd_device_new()</code>,
you need to register the struct <span class="structname">device</span> of the chip
you're handling for udev and co. ALSA provides a macro for compatibility with
older kernels. Simply call like the following:
</p><div class="informalexample"><pre class="programlisting">
snd_card_set_dev(card, &pci->dev);
</pre></div><p>
so that it stores the PCI's device pointer to the card. This will be
referred by ALSA core functions later when the devices are registered.
</p><p>
In the case of non-PCI, pass the proper device struct pointer of the BUS
instead. (In the case of legacy ISA without PnP, you don't have to do
anything.)
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