"cell-index" vs. "index" vs. no index in I2C device nodes

[David Gibson]

On Thu, Jun 05, 2008 at 02:16:41PM -0500, Timur Tabi wrote:
> Grant Likely wrote:
> 
> > No; use an alias in the aliases node.  That is what aliases is designed
> > for.  Something like 'index' is a reinvention of the wheel.
> 
> Do aliases work in reverse?  That is, if I have a pointer to a
> device node, can I look up its alias directly?  Or do I have to scan
> the aliases node and do a comparison of each phandle, one at a time,
> until I find a match?  And when I find a match, will I need to do
> sscanf() in order to extract the actual index value from the
> property?

Aliases aren't trivially reversible, but it shouldn't be too hard to
write a helper function which will do the scan and parse you describe.

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
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