linux-kernel - Re: [PATCH -tip v2 0/5] add common functions for struct dma_map

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Message-Id: <20090528002020.8b68f085.akpm@linux-foundation.org>
Date:	Thu, 28 May 2009 00:20:20 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, tony.luck@...el.com,
	linux-ia64@...r.kernel.org, arnd@...db.de, joerg.roedel@....com
Subject: Re: [PATCH -tip v2 0/5] add common functions for struct dma_map_ops

On Fri, 15 May 2009 12:55:00 +0900 FUJITA Tomonori <fujita.tomonori@....ntt.co.jp> wrote:

> We unified x86 and IA64's handling of multiple dma mapping operations
> (struct dma_map_ops in linux/dma-mapping.h) so we can remove
> duplication in their arch/include/asm/dma-mapping.h.
> 
> This patchset adds include/asm-generic/dma-mapping-common.h that
> provides some generic dma mapping function definitions for the users
> of struct dma_map_ops. This enables us to remove about 100 lines. This
> also enables us to easily add CONFIG_DMA_API_DEBUG support, which only
> x86 supports for now. The 4th patch adds CONFIG_DMA_API_DEBUG support
> to IA64 by adding only 8 lines.
> 
> This is against tip/master since tip has some changes to
> arch/x86/include/asm/dma-mapping.h.
> 
> The changes since the first version are
> 
> - fixed a bug that dma_attrs is not passed properly (thanks to Arnd
> Bergmann).
> 
> - used a new name, dma-mapping-common.h, instead of dma-mapping.h
> (suggested by Arnd Bergmann).
> 
> - added Joerg's Acked-by
> 
> =
>  arch/ia64/Kconfig                        |    1 +
>  arch/ia64/include/asm/dma-mapping.h      |  110 ++----------------
>  arch/x86/Kconfig                         |    1 +
>  arch/x86/include/asm/dma-mapping.h       |  174 +---------------------------
>  include/asm-generic/dma-mapping-common.h |  190 ++++++++++++++++++++++++++++++
>  lib/dma-debug.c                          |   82 ++++++++------
>  6 files changed, 252 insertions(+), 306 deletions(-)

I'm hoping that a suitable merge scheme here would be for me to merge
1/5 into mainline then to send 2/5 to Ingo and 3/5, 4/5 and 5/5 to Tony
for merging.  Will that all compile and work?

Alternatively I can merge the lot, with suitable acking.
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