Re: [RFC/PATCH 5/9] v4l: Create v4l2 subdev file handle structure

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Hi Hans,

On Sunday 26 September 2010 19:25:26 Hans Verkuil wrote:
> On Sunday, September 26, 2010 18:13:28 Laurent Pinchart wrote:
> > From: Stanimir Varbanov <svarbanov@xxxxxxxxxx>
> > 
> > Used for storing subdev information per file handle and hold V4L2 file
> > handle.
> > 
> > Signed-off-by: Stanimir Varbanov <svarbanov@xxxxxxxxxx>
> > Signed-off-by: Antti Koskipaa <antti.koskipaa@xxxxxxxxx>
> > Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> > ---
> > 
> >  drivers/media/video/v4l2-subdev.c |   82
> >  +++++++++++++++++++++++++------------ include/media/v4l2-subdev.h      
> >  |   25 +++++++++++
> >  2 files changed, 80 insertions(+), 27 deletions(-)
> > 
> > diff --git a/drivers/media/video/v4l2-subdev.c
> > b/drivers/media/video/v4l2-subdev.c index 731dc12..d2891c1 100644
> > --- a/drivers/media/video/v4l2-subdev.c
> > +++ b/drivers/media/video/v4l2-subdev.c
> > @@ -30,38 +30,66 @@
> > 
> >  #include <media/v4l2-fh.h>
> >  #include <media/v4l2-event.h>
> > 
> > +static int subdev_fh_init(struct v4l2_subdev_fh *fh, struct v4l2_subdev
> > *sd) +{
> > +	/* Allocate probe format and crop in the same memory block */
> > +	fh->probe_fmt = kzalloc((sizeof(*fh->probe_fmt) +
> > +				sizeof(*fh->probe_crop)) * sd->entity.num_pads,
> > +				GFP_KERNEL);
> > +	if (fh->probe_fmt == NULL)
> > +		return -ENOMEM;
> 
> I really don't like the name 'probe' for this. I remember discussing it
> with you, Laurent, but I can't remember the word I came up with.
> 
> Can you remember what it was?

I remember a discussion, but we haven't agreed on a name. Do you dislike both 
"probe" and "active", or "probe" only ?

(BTW the name comes from the UVC spec, where a similar mechanism is used)

-- 
Regards,

Laurent Pinchart
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