[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>
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@ -75,6 +75,9 @@ seek is started.</para>
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<para>This ioctl is supported if the <constant>V4L2_CAP_HW_FREQ_SEEK</constant> capability is set.</para>
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<para>If this ioctl is called from a non-blocking filehandle, then &EAGAIN; is
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returned and no seek takes place.</para>
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<table pgwide="1" frame="none" id="v4l2-hw-freq-seek">
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<title>struct <structname>v4l2_hw_freq_seek</structname></title>
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<tgroup cols="3">
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@ -157,6 +160,13 @@ one of the values in the <structfield>type</structfield>,
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fields is wrong.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><errorcode>EAGAIN</errorcode></term>
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<listitem>
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<para>Attempted to call <constant>VIDIOC_S_HW_FREQ_SEEK</constant>
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with the filehandle in non-blocking mode.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><errorcode>ENODATA</errorcode></term>
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<listitem>
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