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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>acm_cdc_notify</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="USB Gadget API for Linux" /><link rel="up" href="ch03s06.html" title="Composite Device Functions" /><link rel="prev" href="ch03s06.html" title="Composite Device Functions" /><link rel="next" href="re66.html" title="acm_bind_config" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>acm_cdc_notify</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch03s06.html">Prev</a> </td><th width="60%" align="center">Composite Device Functions</th><td width="20%" align="right"> <a accesskey="n" href="re66.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="acm_cdc_notify"><a id="API-acm-cdc-notify"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>acm_cdc_notify —
issue CDC notification to host
</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">int <b class="fsfunc">acm_cdc_notify </b>(</code></td><td>struct f_acm * <var class="pdparam">acm</var>, </td></tr><tr><td> </td><td>u8 <var class="pdparam">type</var>, </td></tr><tr><td> </td><td>u16 <var class="pdparam">value</var>, </td></tr><tr><td> </td><td>void * <var class="pdparam">data</var>, </td></tr><tr><td> </td><td>unsigned <var class="pdparam">length</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2946786"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>acm</code></em></span></dt><dd><p>
wraps host to be notified
</p></dd><dt><span class="term"><em class="parameter"><code>type</code></em></span></dt><dd><p>
notification type
</p></dd><dt><span class="term"><em class="parameter"><code>value</code></em></span></dt><dd><p>
Refer to cdc specs, wValue field.
</p></dd><dt><span class="term"><em class="parameter"><code>data</code></em></span></dt><dd><p>
data to be sent
</p></dd><dt><span class="term"><em class="parameter"><code>length</code></em></span></dt><dd><p>
size of data
</p></dd></dl></div></div><div class="refsect1" title="Context"><a id="id2946877"></a><h2>Context</h2><p>
irqs blocked, acm->lock held, acm_notify_req non-null
</p></div><div class="refsect1" title="Description"><a id="id2946890"></a><h2>Description</h2><p>
Returns zero on sucess or a negative errno.
</p><p>
See section 6.3.5 of the CDC 1.1 specification for information
</p></div><div class="refsect1" title="about the only notification we issue"><a id="id2946904"></a><h2>about the only notification we issue</h2><p>
SerialState change.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch03s06.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch03s06.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re66.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Composite Device Functions </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>acm_bind_config</span></td></tr></table></div></body></html>
