sparse warnings

[Sascha Hauer]

Hi Marek,

On Mon, Nov 15, 2010 at 03:20:47PM +0100, Belisko Marek wrote:
> Hi,
> 
> barebox compilation with C=1 produce a lot of sparse warnings.
> Mainly concerning __iomem problems with readb() and similar functions.
> 
> Make it sense to take care or just could be omitted?

I think it makes sense to work on this. Then we can see the useful
warnings buried under the __iomem warnings.

I had the idea of adding a

#define IOMEM(addr)        ((void __force __iomem *)(addr))

and use it where appropriate.

Sascha

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