linux-kernel - Re: [PATCH 2/2] DMAENGINE: driver for the ARM PL080/PL081 PrimeCells

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Date:	Sat, 7 Aug 2010 00:54:59 +0200
From:	Linus Walleij <linus.ml.walleij@...il.com>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	Alessandro Rubini <rubini@...pv.it>, peter.pearse@....com,
	viresh.kumar@...com, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, yuanyabin1978@...a.com,
	ben-linux@...ff.org, kgene.kim@...sung.com, rmk@....linux.org.uk
Subject: Re: [PATCH 2/2] DMAENGINE: driver for the ARM PL080/PL081 PrimeCells

2010/8/6 Dan Williams <dan.j.williams@...el.com>:

> One
> thing that should be on the todo list is to review the usage of memory
> barriers.  I don't think they are serving the purpose that you think
> they are.

All of those are from Peters original implementation, I never use any
barriers so they actually looked alien to me. Unless I get a clear
rationale from Peter I'll just remove them all for the time being in
the fix-up version due after updating to generic slave control.

Yours,
Linus Walleij
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