Re: [PATCH 1/1] unify DMA_..BIT_MASK definitions: v3.1

[Jeremy Fitzhardinge]

Andrew Morton wrote:
> From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
>
> Now that we have DMA_BIT_MASK(), these macros are pointless.
>   

Except, unfortunately, DMA_64BIT_MASK.  I guess we could special case
it, assuming this works in all the contexts the macro is used in (ie,
compile-time constant?):

#define DMA_BIT_MASK(n)	(((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))



    J
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