Re: [PATCH v4 2/3] irqchip: GIC: Add support for irq_{get,set}_irqchip_state

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Wed, May 13, 2015 at 4:25 AM, Feng Kan <fkan@xxxxxxx> wrote:

> Marc:
>
> Sorry for top posting. It seems with GIC-400, the get_irqstate is not a reliable
> way of accessing the GPIO status. In our case, the gpio interrupt status can
> only be read correctly with the SPISR register. So it seems we have to go
> back to the old way of mapping the SPISR portion of the GIC in our GPIO
> driver. We wanted to ask you if that is acceptable since SPISR in not
> standard in all GIC, perhaps we can treat it differently.

As GPIO maintainer I am curious about what this is...

Can you describe the scenario where your GPIO (!) driver needs
to be poking around in the GIC SPISR?

Yours,
Linus Walleij
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