On Mon, Nov 22, 2004 at 10:55:21AM -0800, Roland Dreier wrote:

    Christoph> That just means avoidable interface changes sooner or
    Christoph> later.  The dma_ interfaces also have the added benefit
    Christoph> of allowing better control of the type of consistant
    Christoph> allocation interface.

Is there a dma_xxx equivalent to DECLARE_PCI_UNMAP_ADDR(),
pci_unmap_addr_set() and friends, or does a driver always have to save
off the DMA address from dma_map_xxx?

Good question.  In pratice I can't find a case were DECLARE_PCI_UNMAP_ADDR() 
wouldn't simply work for dma_*, but we should probably document that
somewhere.