Proposed changes to io.h

[John Whitney]

>> 1. Modifications to virt_to_bus, bus_to_virt, virt_to_phys, and
>> phys_to_virt.  With the use of fully virtual addresses for
>
> These are all obsolete interface and you're not supposed to use them
> for new plattforms or drivers at all.
>

pci_map_single() (include/asm-ppc/pci.h) and dma_map_single()
(include/asm-ppc/dma-mapping.h) use virt_to_bus().  Shouldn't some care
be taken to ensure that ANY virtual address passed to these routines
maps to the correct physical (bus) address?

John


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