Hi Sakari, On Friday 13 May 2011 15:24:13 Sakari Ailus wrote: > VIDIOC_G_CTRL and VIDIOC_G_EXT_CTRLS return EACCES when setting a read-only > control or getting a write-only control. Document this. You might want to modify the commit message to include VIDIOC_S_CTRL and VIDIOC_S_EXT_CTRLS. Setting a control with the VIDIOC_G_(EXT_)CTRL(S) ioctls is a bit difficult :-) > Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxxxxxxxxxxxxx> > --- > Documentation/DocBook/v4l/vidioc-g-ctrl.xml | 7 +++++++ > Documentation/DocBook/v4l/vidioc-g-ext-ctrls.xml | 7 +++++++ > 2 files changed, 14 insertions(+), 0 deletions(-) > > diff --git a/Documentation/DocBook/v4l/vidioc-g-ctrl.xml > b/Documentation/DocBook/v4l/vidioc-g-ctrl.xml index 8b5e6ff..5146d00 > 100644 > --- a/Documentation/DocBook/v4l/vidioc-g-ctrl.xml > +++ b/Documentation/DocBook/v4l/vidioc-g-ctrl.xml > @@ -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> Should you s/set/try or set/ ? > + </listitem> > + </varlistentry> > </variablelist> > </refsect1> > </refentry> > diff --git a/Documentation/DocBook/v4l/vidioc-g-ext-ctrls.xml > b/Documentation/DocBook/v4l/vidioc-g-ext-ctrls.xml index 3aa7f8f..5e73517 > 100644 > --- a/Documentation/DocBook/v4l/vidioc-g-ext-ctrls.xml > +++ b/Documentation/DocBook/v4l/vidioc-g-ext-ctrls.xml > @@ -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> -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
