linux-kernel - Re: [PATCH 1/1] DMA: mark DMA_nBITS

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Message-Id: <20090510085618D.fujita.tomonori@lab.ntt.co.jp>
Date:	Sun, 10 May 2009 08:55:17 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	jirislaby@...il.com
Cc:	mingo@...e.hu, yanghy@...fujitsu.com, akpm@...ux-foundation.org,
	fujita.tomonori@....ntt.co.jp, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] DMA: mark DMA_nBITS_MASK as deprecated

On Fri,  8 May 2009 10:00:38 +0200
Jiri Slaby <jirislaby@...il.com> wrote:

> Ingo Molnar <mingo@...e.hu> wrote:
> > Can you see a way to emit build warnings? If yes then that might be 
> > a better solution instead of breaking in-the-pipeline code.
> 
> What about this:
> --
> 
> Mark them deprecated so that 3rd party vendors get notified about that
> before their modules break by removing those macros later.
> 
> Signed-off-by: Jiri Slaby <jirislaby@...il.com>
> ---
>  include/linux/dma-mapping.h |   26 ++++++++++++++------------
>  1 files changed, 14 insertions(+), 12 deletions(-)

Ah, nice magic!

Well, "warning: 'DMA_DEPRECATED' is deprecated" warning message is a
bit obscure but the developers should notice that they do something
wrong.

Acked-by: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>


Thanks a lot,
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