1<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>request_firmware_nowait</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="ch02s02.html" title="Device Drivers Base"><link rel="prev" href="API-release-firmware.html" title="release_firmware"><link rel="next" href="API-transport-class-register.html" title="transport_class_register"></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">request_firmware_nowait</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-release-firmware.html">Prev</a> </td><th width="60%" align="center">Device Drivers Base</th><td width="20%" align="right"> <a accesskey="n" href="API-transport-class-register.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-request-firmware-nowait"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>request_firmware_nowait — 2 asynchronous version of request_firmware 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">int <b class="fsfunc">request_firmware_nowait </b>(</code></td><td>struct module * <var class="pdparam">module</var>, </td></tr><tr><td> </td><td>bool <var class="pdparam">uevent</var>, </td></tr><tr><td> </td><td>const char * <var class="pdparam">name</var>, </td></tr><tr><td> </td><td><a class="link" href="API-struct-device.html" title="struct device">struct device</a> * <var class="pdparam">device</var>, </td></tr><tr><td> </td><td>gfp_t <var class="pdparam">gfp</var>, </td></tr><tr><td> </td><td>void * <var class="pdparam">context</var>, </td></tr><tr><td> </td><td>void (*<var class="pdparam">cont</var>) 4 <code>(</code>const struct firmware *fw, void *context<code>)</code><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="id-1.4.3.55.5"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>module</code></em></span></dt><dd><p> 5 module requesting the firmware 6 </p></dd><dt><span class="term"><em class="parameter"><code>uevent</code></em></span></dt><dd><p> 7 sends uevent to copy the firmware image if this flag 8 is non-zero else the firmware copy must be done manually. 9 </p></dd><dt><span class="term"><em class="parameter"><code>name</code></em></span></dt><dd><p> 10 name of firmware file 11 </p></dd><dt><span class="term"><em class="parameter"><code>device</code></em></span></dt><dd><p> 12 device for which firmware is being loaded 13 </p></dd><dt><span class="term"><em class="parameter"><code>gfp</code></em></span></dt><dd><p> 14 allocation flags 15 </p></dd><dt><span class="term"><em class="parameter"><code>context</code></em></span></dt><dd><p> 16 will be passed over to <em class="parameter"><code>cont</code></em>, and 17 <em class="parameter"><code>fw</code></em> may be <code class="constant">NULL</code> if firmware request fails. 18 </p></dd><dt><span class="term"><em class="parameter"><code>cont</code></em></span></dt><dd><p> 19 function will be called asynchronously when the firmware 20 request is over. 21 </p></dd></dl></div></div><div class="refsect1"><a name="id-1.4.3.55.6"></a><h2>Description</h2><p> 22 Caller must hold the reference count of <em class="parameter"><code>device</code></em>. 23 </p><p> 24 25 Asynchronous variant of <code class="function"><a class="link" href="API-request-firmware.html" title="request_firmware">request_firmware</a></code> for user contexts: 26 - sleep for as small periods as possible since it may 27 increase kernel boot time of built-in device drivers 28 requesting firmware in their -><code class="function">probe</code> methods, if 29 <em class="parameter"><code>gfp</code></em> is GFP_KERNEL. 30 </p><p> 31 32 - can't sleep at all if <em class="parameter"><code>gfp</code></em> is GFP_ATOMIC. 33</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-release-firmware.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch02s02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="API-transport-class-register.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">release_firmware</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span class="phrase">transport_class_register</span></td></tr></table></div></body></html> 34