| <refentry id="vidioc-log-status"> |
| <refmeta> |
| <refentrytitle>ioctl VIDIOC_LOG_STATUS</refentrytitle> |
| &manvol; |
| </refmeta> |
| |
| <refnamediv> |
| <refname>VIDIOC_LOG_STATUS</refname> |
| <refpurpose>Log driver status information</refpurpose> |
| </refnamediv> |
| |
| <refsynopsisdiv> |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef>int <function>ioctl</function></funcdef> |
| <paramdef>int <parameter>fd</parameter></paramdef> |
| <paramdef>int <parameter>request</parameter></paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| </refsynopsisdiv> |
| |
| <refsect1> |
| <title>Description</title> |
| |
| <para>As the video/audio devices become more complicated it |
| becomes harder to debug problems. When this ioctl is called the driver |
| will output the current device status to the kernel log. This is |
| particular useful when dealing with problems like no sound, no video |
| and incorrectly tuned channels. Also many modern devices autodetect |
| video and audio standards and this ioctl will report what the device |
| thinks what the standard is. Mismatches may give an indication where |
| the problem is.</para> |
| |
| <para>This ioctl is optional and not all drivers support it. It |
| was introduced in Linux 2.6.15.</para> |
| </refsect1> |
| |
| <refsect1> |
| &return-value; |
| </refsect1> |
| </refentry> |
