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authorHans Verkuil <hans.verkuil@cisco.com>2012-09-21 08:33:38 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-09-26 17:49:53 -0300
commitf9611240b96fd18359531e939b09969fee556221 (patch)
tree2d45e3d7c2c8d2dbf2c02a354054689f16eb64ef /Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml
parent6473262e80709e65b7dc71549b8b8e41c604809a (diff)
[media] DocBook: in non-blocking mode return EAGAIN in hwseek
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@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml')
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml10
1 files changed, 10 insertions, 0 deletions
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 3dd1bec6d3c..5b379e75219 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>