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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>request_firmware</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="ch02.html#id2617423" title="Device Drivers Base" /><link rel="prev" href="re208.html" title="class_compat_remove_link" /><link rel="next" href="re210.html" title="release_firmware" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>request_firmware</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re208.html">Prev</a> </td><th width="60%" align="center">Device Drivers Base</th><td width="20%" align="right"> <a accesskey="n" href="re210.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="request_firmware"><a id="API-request-firmware"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>request_firmware —
send firmware request and wait for it
</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">request_firmware </b>(</code></td><td>const struct firmware ** <var class="pdparam">firmware_p</var>, </td></tr><tr><td> </td><td>const char * <var class="pdparam">name</var>, </td></tr><tr><td> </td><td>struct device * <var class="pdparam">device</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2624552"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>firmware_p</code></em></span></dt><dd><p>
pointer to firmware image
</p></dd><dt><span class="term"><em class="parameter"><code>name</code></em></span></dt><dd><p>
name of firmware file
</p></dd><dt><span class="term"><em class="parameter"><code>device</code></em></span></dt><dd><p>
device for which firmware is being loaded
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2624613"></a><h2>Description</h2><p>
<em class="parameter"><code>firmware_p</code></em> will be used to return a firmware image by the name
of <em class="parameter"><code>name</code></em> for device <em class="parameter"><code>device</code></em>.
</p><p>
Should be called from user context where sleeping is allowed.
</p><p>
<em class="parameter"><code>name</code></em> will be used as <code class="envar">$FIRMWARE</code> in the uevent environment and
should be distinctive enough not to be confused with any other
firmware image for this or any other device.
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