Re: [PATCH v3 2/2] dma/imx-sdma: use writel to write register whenenable a channel

[Shawn Guo]

On Thu, Jan 05, 2012 at 05:19:05PM +0800, Richard Zhao wrote:
> Russel mentioned that too. But I cannot understand.
> If CONFIG_ARM_DMA_MEM_BUFFERABLE, readl/writel always call rmb/wmb. Do
> we realy need it? It might affect performance.
> 
For safety, I think we need it.  The operations should be really fast.

-- 
Regards,
Shawn
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