diff mbox

[v5,10/10,media] v4l: Forbid usage of V4L2_MBUS_FMT definitions inside the kernel

Message ID 1415461632-31236-1-git-send-email-boris.brezillon@free-electrons.com (mailing list archive)
State New, archived
Headers show

Commit Message

Boris BREZILLON Nov. 8, 2014, 3:47 p.m. UTC 
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>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 include/uapi/linux/v4l2-mediabus.h | 45 ++++++++++++++++++++++++--------------
 1 file changed, 28 insertions(+), 17 deletions(-)

Comments

Hans Verkuil Nov. 10, 2014, 11:09 a.m. UTC | #1 
On 11/08/2014 04:47 PM, 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>
> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> ---
>  include/uapi/linux/v4l2-mediabus.h | 45 ++++++++++++++++++++++++--------------
>  1 file changed, 28 insertions(+), 17 deletions(-)
> 
> diff --git a/include/uapi/linux/v4l2-mediabus.h b/include/uapi/linux/v4l2-mediabus.h
> index d712df8..5c9410d 100644
> --- a/include/uapi/linux/v4l2-mediabus.h
> +++ b/include/uapi/linux/v4l2-mediabus.h
> @@ -15,6 +15,33 @@
>  #include <linux/types.h>
>  #include <linux/videodev2.h>
>  
> +/**
> + * struct v4l2_mbus_framefmt - frame format on the media bus
> + * @width:	frame width
> + * @height:	frame height
> + * @code:	data format code (from enum v4l2_mbus_pixelcode)
> + * @field:	used interlacing type (from enum v4l2_field)
> + * @colorspace:	colorspace of the data (from enum v4l2_colorspace)
> + */
> +struct v4l2_mbus_framefmt {
> +	__u32			width;
> +	__u32			height;
> +	__u32			code;
> +	__u32			field;
> +	__u32			colorspace;
> +	__u32			reserved[7];
> +};
> +
> +#ifndef __KERNEL__
> +/*
> + * enum v4l2_mbus_pixelcode and its definitions are now deprecated, and
> + * MEDIA_BUS_FMT_ definitions (defined in media-bus-format.h) should be
> + * used instead.
> + *
> + * New defines should only be added to media-bus-format.h. The
> + * v4l2_mbus_pixelcode enum is frozen.
> + */
> +
>  #define V4L2_MBUS_FROM_MEDIA_BUS_FMT(name)	\
>  	MEDIA_BUS_FMT_ ## name = V4L2_MBUS_FMT_ ## name

Shouldn't this be the other way around?

  	V4L2_MBUS_FMT_ ## name = MEDIA_BUS_FMT_ ## name

Regards,

	Hans

>  
> @@ -102,22 +129,6 @@ enum v4l2_mbus_pixelcode {
>  
>  	V4L2_MBUS_FROM_MEDIA_BUS_FMT(AHSV8888_1X32),
>  };
> -
> -/**
> - * struct v4l2_mbus_framefmt - frame format on the media bus
> - * @width:	frame width
> - * @height:	frame height
> - * @code:	data format code (from enum v4l2_mbus_pixelcode)
> - * @field:	used interlacing type (from enum v4l2_field)
> - * @colorspace:	colorspace of the data (from enum v4l2_colorspace)
> - */
> -struct v4l2_mbus_framefmt {
> -	__u32			width;
> -	__u32			height;
> -	__u32			code;
> -	__u32			field;
> -	__u32			colorspace;
> -	__u32			reserved[7];
> -};
> +#endif /* __KERNEL__ */
>  
>  #endif
> 

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Boris BREZILLON Nov. 10, 2014, 5:02 p.m. UTC | #2 
On Mon, 10 Nov 2014 12:09:19 +0100
Hans Verkuil <hverkuil@xs4all.nl> wrote:

> On 11/08/2014 04:47 PM, 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>
> > Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> > ---
> >  include/uapi/linux/v4l2-mediabus.h | 45 ++++++++++++++++++++++++--------------
> >  1 file changed, 28 insertions(+), 17 deletions(-)
> > 
> > diff --git a/include/uapi/linux/v4l2-mediabus.h b/include/uapi/linux/v4l2-mediabus.h
> > index d712df8..5c9410d 100644
> > --- a/include/uapi/linux/v4l2-mediabus.h
> > +++ b/include/uapi/linux/v4l2-mediabus.h
> > @@ -15,6 +15,33 @@
> >  #include <linux/types.h>
> >  #include <linux/videodev2.h>
> >  
> > +/**
> > + * struct v4l2_mbus_framefmt - frame format on the media bus
> > + * @width:	frame width
> > + * @height:	frame height
> > + * @code:	data format code (from enum v4l2_mbus_pixelcode)
> > + * @field:	used interlacing type (from enum v4l2_field)
> > + * @colorspace:	colorspace of the data (from enum v4l2_colorspace)
> > + */
> > +struct v4l2_mbus_framefmt {
> > +	__u32			width;
> > +	__u32			height;
> > +	__u32			code;
> > +	__u32			field;
> > +	__u32			colorspace;
> > +	__u32			reserved[7];
> > +};
> > +
> > +#ifndef __KERNEL__
> > +/*
> > + * enum v4l2_mbus_pixelcode and its definitions are now deprecated, and
> > + * MEDIA_BUS_FMT_ definitions (defined in media-bus-format.h) should be
> > + * used instead.
> > + *
> > + * New defines should only be added to media-bus-format.h. The
> > + * v4l2_mbus_pixelcode enum is frozen.
> > + */
> > +
> >  #define V4L2_MBUS_FROM_MEDIA_BUS_FMT(name)	\
> >  	MEDIA_BUS_FMT_ ## name = V4L2_MBUS_FMT_ ## name
> 
> Shouldn't this be the other way around?
> 
>   	V4L2_MBUS_FMT_ ## name = MEDIA_BUS_FMT_ ## name

Argh! Absolutely, I'll fix that.

> 
> Regards,
> 
> 	Hans
> 
> >  
> > @@ -102,22 +129,6 @@ enum v4l2_mbus_pixelcode {
> >  
> >  	V4L2_MBUS_FROM_MEDIA_BUS_FMT(AHSV8888_1X32),
> >  };
> > -
> > -/**
> > - * struct v4l2_mbus_framefmt - frame format on the media bus
> > - * @width:	frame width
> > - * @height:	frame height
> > - * @code:	data format code (from enum v4l2_mbus_pixelcode)
> > - * @field:	used interlacing type (from enum v4l2_field)
> > - * @colorspace:	colorspace of the data (from enum v4l2_colorspace)
> > - */
> > -struct v4l2_mbus_framefmt {
> > -	__u32			width;
> > -	__u32			height;
> > -	__u32			code;
> > -	__u32			field;
> > -	__u32			colorspace;
> > -	__u32			reserved[7];
> > -};
> > +#endif /* __KERNEL__ */
> >  
> >  #endif
> > 
>
diff mbox

Patch

diff --git a/include/uapi/linux/v4l2-mediabus.h b/include/uapi/linux/v4l2-mediabus.h
index d712df8..5c9410d 100644
--- a/include/uapi/linux/v4l2-mediabus.h
+++ b/include/uapi/linux/v4l2-mediabus.h
@@ -15,6 +15,33 @@ 
 #include <linux/types.h>
 #include <linux/videodev2.h>
 
+/**
+ * struct v4l2_mbus_framefmt - frame format on the media bus
+ * @width:	frame width
+ * @height:	frame height
+ * @code:	data format code (from enum v4l2_mbus_pixelcode)
+ * @field:	used interlacing type (from enum v4l2_field)
+ * @colorspace:	colorspace of the data (from enum v4l2_colorspace)
+ */
+struct v4l2_mbus_framefmt {
+	__u32			width;
+	__u32			height;
+	__u32			code;
+	__u32			field;
+	__u32			colorspace;
+	__u32			reserved[7];
+};
+
+#ifndef __KERNEL__
+/*
+ * enum v4l2_mbus_pixelcode and its definitions are now deprecated, and
+ * MEDIA_BUS_FMT_ definitions (defined in media-bus-format.h) should be
+ * used instead.
+ *
+ * New defines should only be added to media-bus-format.h. The
+ * v4l2_mbus_pixelcode enum is frozen.
+ */
+
 #define V4L2_MBUS_FROM_MEDIA_BUS_FMT(name)	\
 	MEDIA_BUS_FMT_ ## name = V4L2_MBUS_FMT_ ## name
 
@@ -102,22 +129,6 @@  enum v4l2_mbus_pixelcode {
 
 	V4L2_MBUS_FROM_MEDIA_BUS_FMT(AHSV8888_1X32),
 };
-
-/**
- * struct v4l2_mbus_framefmt - frame format on the media bus
- * @width:	frame width
- * @height:	frame height
- * @code:	data format code (from enum v4l2_mbus_pixelcode)
- * @field:	used interlacing type (from enum v4l2_field)
- * @colorspace:	colorspace of the data (from enum v4l2_colorspace)
- */
-struct v4l2_mbus_framefmt {
-	__u32			width;
-	__u32			height;
-	__u32			code;
-	__u32			field;
-	__u32			colorspace;
-	__u32			reserved[7];
-};
+#endif /* __KERNEL__ */
 
 #endif