Re: [v4l-dvb-maintainer] [PATCH] DVB: Delete unused header file linux/dvb/version.h.

["Manu Abraham" <abraham.manu@gmail.com>]

On 3/23/07, Arjan van de Ven <arjan@infradead.org> wrote:
> On Fri, 2007-03-23 at 16:47 +0100, Marcel Siegert wrote:
> > On Friday 23 March 2007, Robert P. J. Day wrote:
> > >
> > > Delete the unreferenced header file include/linux/dvb/version.h.
> > >
> > > Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
> > >
> > NACK
> > this header is unreferenced in kernel, but used for applications that compile for userspace
> > to determine the api version.
>
>
> btw that is something extremely evil to do. Either you have varying apis
> between kernels (which is naughty, but I suppose you can go up in
> capabilities) or it's fully static.
>


There are cases where we need an API update since newer systems do show up.
In such a case, the only way is to provide backward compatibility
while adding in newer stuff.

Currently we use the version major/minor for the userspace to identify
the in kernel API, while the userspace apps can remain binary
compatible



Regards,
Manu