On Thu, 2007-05-17 at 08:05 -0700, Stephen Hemminger wrote:
> I did this in sky2 driver:
>
> /* Return high part of DMA address (could be 32 or 64 bit) */
> static inline u32 high32(dma_addr_t a)
> {
> return sizeof(a) > sizeof(u32) ? (a >> 16) >> 16 : 0;
> }
Note that akpm recently added a macro/inline for this to the tree which
IIRC went to Linus.
johannes
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