linux-kernel - Re: [PATCH -mm 0/3] remove useless ISA_DMA

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Date:	Tue, 1 Jun 2010 20:24:52 +0200
From:	Jens Axboe <jaxboe@...ionio.com>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc:	akpm@...ux-foundation.org, James.Bottomley@...e.de,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH -mm 0/3] remove useless ISA_DMA_THRESHOLD

On Mon, May 31 2010, FUJITA Tomonori wrote:
> This patchset removes useless ISA_DMA_THRESHOLD:
> 
> - ISA_DMA_THRESHOLD is irrelevant to the majority of architectures but
>   they have to define it.
> 
> - ISA_DMA_THRESHOLD definition is inconsistent on architectures; ISA
>   DMA addressing restriction, DMA addressing restriction or something
>   else.
> 
> - Everyone (except for SCSI) uses dma_mask instead of ancient
>   ISA_DMA_THRESHOLD.
> 
> Only SCSI uses ISA_DMA_THRESHOLD for ancient drivers with non-zero
> unchecked_isa_dma. We can safely remove ISA_DMA_THRESHOLD usage in
> SCSI. So we can clean up ISA_DMA_THRESHOLD on the whole tree.

Looks good. James, it's probably easier if I just carry this patch set.

-- 
Jens Axboe

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