[PATCH 3/4] ARM: create a common IOMEM definition

[Arnd Bergmann]

On Sunday 11 March 2012, Rob Herring wrote:
> From: Rob Herring <rob.herring at calxeda.com>
> 
> Several platforms create IOMEM defines for casting to 'void __iomem *',
> and other platforms are incorrectly using __io() macro for the same
> purpose. This creates a common definition and removes all the platform
> specific versions. Rather than try to make linux/io.h and asm/io.h
> assembly safe, the assembly version of IOMEM is moved into
> asm/assembler.h.

Looks good to me, in order to fix the problem at hand. I'm not sure
about spreading the IOMEM() macro further, that is largely a separate
problem and only a question of style, not of correctness as with __io().

Acked-by: Arnd Bergmann <arnd at arndb.de>