Paul Mackerras <paulus at samba.org> wrote: > > Andrew Morton writes: > > > Matt Porter <mporter at kernel.crashing.org> wrote: > > > > > > +static u64 dma_mask = 0xffffffffULL; > > > > I'm sure you're totally uninterested in this, but the above will probably > > generate warnings on (say) ppc64, where u64 is implemented as unsigned > > long. > > > > I usually chuck a simple `-1' in there and the compiler always gets it > > right, regardless of signedness and size and architecture. > > Umm, I think we actually want 2^32-1 not -1, don't we?
Doh. Cant coun't.