static/freebsd/man9/BUS_RESCAN.9 4.html


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<table class="head">
  <tr>
    <td class="head-ltitle">BUS_RESCAN(9)</td>
    <td class="head-vol">Kernel Developer's Manual</td>
    <td class="head-rtitle">BUS_RESCAN(9)</td>
  </tr>
</table>
<div class="manual-text">
<section class="Sh">
<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
<p class="Pp"><code class="Nm">BUS_RESCAN</code> &#x2014;
    <span class="Nd">rescan a bus checking for devices that have been added or
    removed</span></p>
</section>
<section class="Sh">
<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<p class="Pp"><code class="In">#include
    &lt;<a class="In">sys/param.h</a>&gt;</code>
  <br/>
  <code class="In">#include &lt;<a class="In">sys/bus.h</a>&gt;</code></p>
<p class="Pp"><var class="Ft">void</var>
  <br/>
  <code class="Fn">BUS_RESCAN</code>(<var class="Fa" style="white-space: nowrap;">device_t
    dev</var>);</p>
</section>
<section class="Sh">
<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
<p class="Pp">The
    <a class="permalink" href="#BUS_RESCAN"><code class="Fn" id="BUS_RESCAN">BUS_RESCAN</code></a>()
    method is called to request a rescan of the child devices on a bus device.
    The method should add any devices that have been added since the previous
    scan and remove devices that have been removed. This method is not required
    to re-examine existing devices to determine if their properties have
    changed. This method is also not required to propagate the rescan request to
    child devices.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
  ALSO</a></h1>
<p class="Pp"><a class="Xr">device(9)</a></p>
</section>
</div>
<table class="foot">
  <tr>
    <td class="foot-date">April 27, 2016</td>
    <td class="foot-os">FreeBSD 15.0</td>
  </tr>
</table>