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SubjectRe: [PATCH/RFC] drivers/irqchip: add irq-inverter
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Hi

>>> The right way to do it is to use the existing API by exposing the
>>> inverter (there are existing examples in the tree, using the
>>> hierarchical model)...
>
> A much simpler version can be written in a few minutes, see below...

Can something like that be used if the parent domain is not hierarchical (i.e. does not provide alloc(),
but provides map() instead)?

In particular, gpio-rcar currently provides irq domain that is not hierarchical.
As well as quite a few other gpiochips.

Nikita

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