linux-kernel - Re: [PATCH v4 16/19] ARM: LPAE: Use generic dma_addr

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Message-ID: <1297783446.14691.167.camel@e102109-lin.cambridge.arm.com>
Date:	Tue, 15 Feb 2011 15:24:06 +0000
From:	Catalin Marinas <catalin.marinas@....com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Will Deacon <Will.Deacon@....com>
Subject: Re: [PATCH v4 16/19] ARM: LPAE: Use generic dma_addr_t type
 definition

On Tue, 2011-02-15 at 14:27 +0000, Russell King - ARM Linux wrote:
> On Mon, Feb 14, 2011 at 01:01:30PM +0000, Catalin Marinas wrote:
> > Maybe we could make the dma_addr_t size configurable (and disabled by
> > default) since I expect there'll be platforms capable of >32-bit DMA.
> 
> It would be far better to fix the dma_addr_t abuses.

That's not a simple task, I have no idea how many drivers get used on
ARM systems. We can defer this until people start using Cortex-A15 in
real hardware and only fix the drivers they need.

BTW, can sparse help here (I haven't used it much)?

-- 
Catalin


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