AMD64 dma_alloc_coherent crashes on non PCI device (was SATA open bugs) II

[Andi Kleen]

> Surely we don't need to wait until then?  This is the correct fix, isn't
> it?  (Obviously I'll split it into a generic and a pcmcia specific piece
> if it looks OK to everyone).
> 
> It sets the PCMCIA dma_mask up correctly and introduces a DMA_MASK_NONE
> (I prefer that to DMA_0BIT_MASK but I can add that too if people want)
> and gives Alan his is_device_dma_capable() API.

Patch looks good to me.

-Andi