Re: [PATCH 3/9 v7] V4L: document the new VIDIOC_CREATE_BUFS and VIDIOC_PREPARE_BUF ioctl()s

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Hi Guennadi,

On Tue, Sep 27, 2011 at 05:49:52PM +0200, Guennadi Liakhovetski wrote:
> On Tue, 27 Sep 2011, Hans Verkuil wrote:
> 
> > On Thursday, September 08, 2011 09:46:26 Guennadi Liakhovetski wrote:
> > > Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
> > > ---
> 
> [snip]
> 
> > > +    <para>When the ioctl is called with a pointer to this structure the driver
> > > +will attempt to allocate up to the requested number of buffers and store the
> > > +actual number allocated and the starting index in the
> > > +<structfield>count</structfield> and the <structfield>index</structfield> fields
> > > +respectively. On return <structfield>count</structfield> can be smaller than
> > > +the number requested. The driver may also adjust buffer sizes as it sees fit,
> > 
> > Add: 'provided the size is greater than or equal to sizeimage'.
> 
> How about:
> 
> The driver may also increase buffer sizes if required, however, it will 
> not update <structfield>sizeimage</structfield> field values. The
> user has to use <constant>VIDIOC_QUERYBUF</constant> to retrieve that
> information.</para>

This may be a stupid question but would there be adverse effects from
updating it?

-- 
Sakari Ailus
e-mail: sakari.ailus@xxxxxx	jabber/XMPP/Gmail: sailus@xxxxxxxxxxxxxx
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