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

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Message-Id: <200703231718.28658.mws@linuxtv.org>
Date:	Fri, 23 Mar 2007 17:18:27 +0100
From:	Marcel Siegert <mws@...uxtv.org>
To:	linux-kernel@...r.kernel.org
Cc:	Arjan van de Ven <arjan@...radead.org>,
	v4l-dvb-maintainer@...uxtv.org,
	"Robert P. J. Day" <rpjday@...dspring.com>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [v4l-dvb-maintainer] [PATCH] DVB: Delete unused header file linux/dvb/version.h.

On Friday 23 March 2007, Arjan van de Ven 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@...dspring.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. 
> 
> If it's dynamic, doing it compiletime is BAD. The same binaries should
> run on multiple kernels after all. An ioctl or a sysfs thing or
> something is a lot better than a compile time constant.
> 
> If it's entirely static exposing a "version" doesn't mean anything and
> it might as well be killed...
> 
> Greetings,
>    Arjan van de Ven
 
hi arjan, 

we discussed that topic - an IOCTL to determine the api version - on dvb ml in nov.2005 and
got no result. so this is still there and will stay imho, until we will find a solution.

regards
marcel

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