From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
VIDIOC_S_HW_FREQ_SEEK should return EAGAIN when called in non-blocking
mode. This might change in the future if we add support for this in the
future, but right now this is not supported.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml b/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml
index 3dd1bec..5b379e7 100644
--- a/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml
@@ -75,6 +75,9 @@ seek is started.</para>
<para>This ioctl is supported if the <constant>V4L2_CAP_HW_FREQ_SEEK</constant> capability is set.</para>
+ <para>If this ioctl is called from a non-blocking filehandle, then &EAGAIN; is
+ returned and no seek takes place.</para>
+
<table pgwide="1" frame="none" id="v4l2-hw-freq-seek">
<title>struct <structname>v4l2_hw_freq_seek</structname></title>
<tgroup cols="3">
@@ -158,6 +161,13 @@ fields is wrong.</para>
</listitem>
</varlistentry>
<varlistentry>
+ <term><errorcode>EAGAIN</errorcode></term>
+ <listitem>
+ <para>Attempted to call <constant>VIDIOC_S_HW_FREQ_SEEK</constant>
+ with the filehandle in non-blocking mode.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
<term><errorcode>ENODATA</errorcode></term>
<listitem>
<para>The hardware seek found no channels.</para>
--
1.7.10.4
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