On Friday, June 03, 2011 21:55:23 Laurent Pinchart wrote:
> Hi Hans,
>
> Thanks for the patch.
>
> On Wednesday 25 May 2011 15:33:49 Hans Verkuil wrote:
> > From: Hans Verkuil <[email protected]>
> >
> > When an application changes a control you want to generate an event.
> > However, you want to avoid sending such an event back to the application
> > (file handle) that caused the change.
> >
> > Add the filehandle to the various set control functions.
>
> To implement per-file handle controls, the get/try functions will need the
> file handle as well. Should this patch handle that, or do you want to
> postpone
> it until a driver uses per-file handle controls ?
No, this has nothing to do with per-filehandle controls. This filehandle is
needed to prevent events from being sent to the filehandle that caused the
change (leads to nasty feedback-loops). Since get and try will never raise
control events I do not need the filehandle there.
It's patches 3/11 and 11/11 that actually add support for per-filehandle
controls.
Regards,
Hans
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