Messages in this thread | | | Date | Fri, 7 Nov 2014 16:31:41 +0100 | From | Boris Brezillon <> | Subject | Re: [PATCH v3 10/10] [media] v4l: Forbid usage of V4L2_MBUS_FMT definitions inside the kernel |
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On Fri, 07 Nov 2014 15:47:41 +0100 Hans Verkuil <hverkuil@xs4all.nl> wrote:
> Nitpicks: > > On 11/07/14 15:07, Boris Brezillon wrote: > > Place v4l2_mbus_pixelcode in a #ifndef __KERNEL__ section so that kernel > > users don't have access to these definitions. > > > > We have to keep this definition for user-space users even though they're > > encouraged to move to the new media_bus_format enum. > > > > Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> > > --- > > include/uapi/linux/v4l2-mediabus.h | 9 +++++++++ > > 1 file changed, 9 insertions(+) > > > > diff --git a/include/uapi/linux/v4l2-mediabus.h b/include/uapi/linux/v4l2-mediabus.h > > index 3d87db7..4f31d0e 100644 > > --- a/include/uapi/linux/v4l2-mediabus.h > > +++ b/include/uapi/linux/v4l2-mediabus.h > > @@ -15,6 +15,14 @@ > > #include <linux/videodev2.h> > > #include <linux/media-bus-format.h> > > > > +#ifndef __KERNEL__ > > + > > +/* > > + * enum v4l2_mbus_pixelcode and its defintions are now deprecated, and > > defintions -> definitions > > > + * MEDIA_BUS_FMT_ defintions (defined in media-bus-format.h) should be > > and again... > > > + * used instead. > > I would also add something like this: > > "New defines should only be added to media-bus-format.h. The v4l2_mbus_pixelcode > enum is frozen."
I'll fix those typos and add this sentence.
> > > + */ > > + > > #define V4L2_MBUS_FROM_MEDIA_BUS_FMT(name) \ > > MEDIA_BUS_FMT_ ## name = V4L2_MBUS_FMT_ ## name > > > > @@ -102,6 +110,7 @@ enum v4l2_mbus_pixelcode { > > > > V4L2_MBUS_FROM_MEDIA_BUS_FMT(AHSV8888_1X32), > > }; > > +#endif /* __KERNEL__ */ > > > > /** > > * struct v4l2_mbus_framefmt - frame format on the media bus > > > > Can you move this struct forward to before the v4l2_mbus_pixelcode enum? That way > the obsolete code is at the end of the header. People might miss this struct > otherwise.
Sure.
Regards,
Boris
-- Boris Brezillon, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
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