linux-kernel - Re: [PATCH 41/45] include/uapi/sound/emu10k1.h: hide gpr_valid, tram_valid and code

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Message-ID: <38157374.ndif9EAmZu@wuerfel>
Date:	Thu, 12 Mar 2015 09:45:42 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Mikko Rapeli <mikko.rapeli@....fi>, linux-kernel@...r.kernel.org,
	Jaroslav Kysela <perex@...ex.cz>, alsa-devel@...a-project.org,
	linux-api@...r.kernel.org
Subject: Re: [PATCH 41/45] include/uapi/sound/emu10k1.h: hide gpr_valid, tram_valid and code_valid in userspace

On Thursday 12 March 2015 07:11:48 Takashi Iwai wrote:
> At Wed, 11 Mar 2015 10:46:29 +0100,
> Arnd Bergmann wrote:
> > 
> > On Wednesday 11 March 2015 07:11:18 Takashi Iwai wrote:
> > > At Wed, 11 Mar 2015 03:22:04 +0200,
> > > 
> > > Are there any other headers like that?  If this is the only one, leave
> > > it as is.  The only program that reads this are some alsa-tools ones
> > > and they have already own DECLARE_BITMAP() definition.  Adding the
> > > extra definition here will even break the compilation out of sudden.
> > 
> > I think it's a worthy goal to have the header files be compilable
> > standalone,
> 
> In general yes, but this case is very minor issue:
> - the file in question is for a hardware device-specific data
>   definition,
> - there are only two programs read this file, both can be built
>   properly,
> - and the device and the programs are very old, modifying such need
>   extra care.

Right, we should only do it if the goal is to have all uapi headers
includable standalone. For a particular header file there is very
little benefit as you say, but it would be useful if we can automatically
test for regressions with new or modified headers.

	Arnd
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