Messages in this thread | | | Date | Fri, 05 Oct 2007 14:23:41 -0700 | From | Jeremy Fitzhardinge <> | Subject | Re: [PATCH 1/1] unify DMA_..BIT_MASK definitions: v3.1 |
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Robert P. J. Day wrote: > or you could take advantage of the macros in kernel.h and write that > as: > > +#define DMA_BIT_MASK(n) (((n) == 64) ? ULLONG_MAX : ((1ULL<<(n))-1)) >
But that's a more indirect way of expressing "I want all 1's".
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