From mboxrd@z Thu Jan  1 00:00:00 1970
From: Steve Muckle <smuckle@codeaurora.org>
Subject: Re: IO access and *_relaxed macros
Date: Fri, 25 Mar 2011 16:55:16 -0700
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To: Catalin Marinas <catalin.marinas@arm.com>
Cc: LAKML <linux-arm-kernel@lists.infradead.org>, Russell King - ARM Linux <linux@arm.linux.org.uk>, Linux ARM MSM <linux-arm-msm@vger.kernel.org>

On 03/25/11 03:08, Catalin Marinas wrote:
> Are there other scenarios (in relation with coherent DMA buffers) where
> we need a DSB after writel() or before readl()?

I'm not sure about use with DMA buffers - I've just been looking at
these macros with respect to (non-DMA related) device accesses, since
they're heavily used for this purpose as well.

thanks,
Steve

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