[RFC v2 2/3] power: power_supply: Add core support for supplied_nodes

[Anton Vorontsov]

On Mon, Mar 04, 2013 at 12:32:35PM -0500, Rhyland Klein wrote:
[...]
> >>Anton, David, would you be adverse to the changing of supplied_to
> >>from being a
> >>list of batteries stored in a charger to being a list of chargers
> >>stored in batteries?
> >>
> >I wonder if we can support both ways?..
>
> Well, the interesting factor becomes either we end up with 2 arrays
> (supplied_to, supplied_from) or we make 1 array (horray, save space!)
> but need to then either have a flag or use the power_supply type to
> know how to interpret the single array (as supplied_to or supplied_from).
> 
> Adding in the second array and adds a char ** and an int, which doesn't seem
> like as much overhead as trying to figure out how to interpret the
> single array
> so I am inclined to stick with 2 arrays.

Yup, two arrays seems very reasonable. Plus that way we don't need to
convert existing drivers, so we avoid churn.

Thanks!

Anton