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-rw-r--r--Documentation/DocBook/media/v4l/vidioc-dbg-g-chip-name.xml3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/DocBook/media/v4l/vidioc-dbg-g-chip-name.xml b/Documentation/DocBook/media/v4l/vidioc-dbg-g-chip-name.xml
index 4921346fabd7..5fce8d84288e 100644
--- a/Documentation/DocBook/media/v4l/vidioc-dbg-g-chip-name.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-dbg-g-chip-name.xml
@@ -63,6 +63,9 @@ card. Regular applications must not use it. When you found a chip
specific bug, please contact the linux-media mailing list (&v4l-ml;)
so it can be fixed.</para>
+ <para>Additionally the Linux kernel must be compiled with the
+<constant>CONFIG_VIDEO_ADV_DEBUG</constant> option to enable this ioctl.</para>
+
<para>To query the driver applications must initialize the
<structfield>match.type</structfield> and
<structfield>match.addr</structfield> or <structfield>match.name</structfield>