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kernel/linux-rt-4.4.41/Documentation/DocBook/media/v4l/media-func-close.xml 1.42 KB
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  <refentry id="media-func-close">
    <refmeta>
      <refentrytitle>media close()</refentrytitle>
      &manvol;
    </refmeta>
  
    <refnamediv>
      <refname>media-close</refname>
      <refpurpose>Close a media device</refpurpose>
    </refnamediv>
  
    <refsynopsisdiv>
      <funcsynopsis>
        <funcsynopsisinfo>#include &lt;unistd.h&gt;</funcsynopsisinfo>
        <funcprototype>
  	<funcdef>int <function>close</function></funcdef>
  	<paramdef>int <parameter>fd</parameter></paramdef>
        </funcprototype>
      </funcsynopsis>
    </refsynopsisdiv>
  
    <refsect1>
      <title>Arguments</title>
  
      <variablelist>
        <varlistentry>
  	<term><parameter>fd</parameter></term>
  	<listitem>
  	  <para>&fd;</para>
  	</listitem>
        </varlistentry>
      </variablelist>
    </refsect1>
  
    <refsect1>
      <title>Description</title>
  
      <para>Closes the media device. Resources associated with the file descriptor
      are freed. The device configuration remain unchanged.</para>
    </refsect1>
  
    <refsect1>
      <title>Return Value</title>
  
      <para><function>close</function> returns 0 on success. On error, -1 is
      returned, and <varname>errno</varname> is set appropriately. Possible error
      codes are:</para>
  
      <variablelist>
        <varlistentry>
  	<term><errorcode>EBADF</errorcode></term>
  	<listitem>
  	  <para><parameter>fd</parameter> is not a valid open file descriptor.
  	  </para>
  	</listitem>
        </varlistentry>
      </variablelist>
    </refsect1>
  </refentry>