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[media] v4l: Document EACCES in VIDIOC_[GS]_CTRL and VIDIOC_{G, S, TRY}_EXT_CTRLS

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VIDIOC_S_CTRL and VIDIOC_S_EXT_CTRLS return EACCES when setting a read-only
control VIDIOC_TRY_EXT_CTRLS when trying a read-only control and
VIDIOC_G_CTRL and VIDIOC_G_EXT_CTRLS when getting a write-only control.
Document this.

Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sakari Ailus 2011-05-15 12:33:58 -03:00 committed by Mauro Carvalho Chehab
parent 45f239ab82
commit 82f7b59cb8
2 changed files with 14 additions and 0 deletions
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7
Documentation/DocBook/media/v4l/vidioc-g-ctrl.xml
View file

@ -117,6 +117,13 @@ because another applications took over control of the device function
this control belongs to.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><errorcode>EACCES</errorcode></term>
<listitem>
<para>Attempt to set a read-only control or to get a
write-only control.</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
</refentry>

7
Documentation/DocBook/media/v4l/vidioc-g-ext-ctrls.xml
View file

@ -294,6 +294,13 @@ The field <structfield>size</structfield> is set to a value that is enough
to store the payload and this error code is returned.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><errorcode>EACCES</errorcode></term>
<listitem>
<para>Attempt to try or set a read-only control or to get a
write-only control.</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
</refentry>