Alan Cox wrote:
We can use the ACPI mode information with several drivers as a hint to
cable type. If the ACPI mode set by the BIOS is faster than UDMA33 then
we know the BIOS thinks there are 80wire cables. If it doesn't set such a
mode or it has no ACPI method then we get no further information and can
rely on existing approaches
Introduce the function headers needed. Null it out for non ACPI boxes
Signed-off-by: Alan Cox <alan@xxxxxxxxxx>
applied 1-2, after combining into a single changeset.
When adding a new API, IMO it's better to keep definition and
implementation additions in a single changeset.
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