On Mon, Aug 20, 2012 at 01:55:32PM +0100, Lee Jones wrote:

> Right, that was the initial intention. It would be a trivial semantic
> change if drivers without DT support wished to use the functionality
> though. However, the only examples I found of a non-DT enabled driver
> that could make good use of it in order to strip out some cruft would
> be the Arizona and one of the Samsung drivers, and they each have

All of the regmap devices could use this.

> their own hand-rolled methods of hwirq -> virq conversion now, so any
> change to support them would result in multiple invocations of
> irq_create_mapping which would likely cause breakage.

Multiple calls to irq_create_mapping() are totally fine.