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-rw-r--r--Documentation/DocBook/media/v4l/vidioc-qbuf.xml10
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/DocBook/media/v4l/vidioc-qbuf.xml b/Documentation/DocBook/media/v4l/vidioc-qbuf.xml
index 3504a7f2f..8b98a0e42 100644
--- a/Documentation/DocBook/media/v4l/vidioc-qbuf.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-qbuf.xml
@@ -187,6 +187,16 @@ continue streaming.
</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><errorcode>EPIPE</errorcode></term>
+ <listitem>
+ <para><constant>VIDIOC_DQBUF</constant> returns this on an empty
+capture queue for mem2mem codecs if a buffer with the
+<constant>V4L2_BUF_FLAG_LAST</constant> was already dequeued and no new buffers
+are expected to become available.
+ </para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect1>
</refentry>