Re: [PATCH 2/8] dmaengine: mv_xor: add support for a38x command in descriptor mode

[Thomas Petazzoni]

Dear Arnd Bergmann,

On Tue, 12 May 2015 17:49:08 +0200, Arnd Bergmann wrote:

> Using 
> 
> 	if (IS_ENABLED(__BIG_ENDIAN))
> 
> here would make it more readable by avoiding the #if. Alternatively,
> you could leave the XOR_DESCRIPTOR_SWAP flag disabled and just swap
> the descriptors manually like a lot of other drivers do. You have
> to swap the mmio accesses anywya.

Agreed on IS_ENABLED(). However, I don't understand the comment about
the need to swap mmio accesses? We're using readl_relaxed() /
writel_relaxed(), and they do the swapping already. Am I missing
something?

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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