RE: [PATCH] media: vb2: dma-sg allocator: change scatterlist allocation method

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Hello,

On Wednesday, August 17, 2011 2:03 AM Jonathan Corbet wrote:

> On Tue, 16 Aug 2011 12:34:56 +0200
> Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> wrote:
> 
> > Right, I wasn't aware of that, but it still doesn't look like an issue. The
only
> >
> > client of dma-sg allocator is marvell-ccic, which is used on x86 systems. If
one
> > needs dma-sg allocator on ARM, he should follow the suggestion from the
> > 74facffeca3795ffb5cf8898f5859fbb822e4c5d commit message.
> 
> Um...that driver runs on ARM, actually - the controller is part of the
> ARMADA 610 SoC...

Ups, I'm really sorry, it looks that I mixed something. I thought that OLPCs are

only x86 based.

> For the OLPC 1.75 there will never be a scatterlist longer than one
> page, I don't think.  That controller can do HD, though, so longer
> lists are possible in the future.

Ok, I see. Do you think it would be possible to ask PXA/MMP platform developers
to 
review all the drivers that can be used on that platform and enable scatter-list

chaining for this arm sub-arch? If this is a problem then we will have to delay
this
sg chaining patch.

Best regards
-- 
Marek Szyprowski
Samsung Poland R&D Center

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