On Fri, Jul 24, 2015 at 1:26 PM, Dmitry Torokhov
<dmitry.torokhov@xxxxxxxxx> wrote:
> Sometimes drivers might wish to transition from index-based to named
> interrupt descriptions. To aid in decision-making when parsing device
> tree data let's provide a helper that will indicate the scheme that is
> being used.
Generally, IRQs are retrieved by platform_get_irq or
platform_get_irq_byname. Drivers should not call the of_irq_*
functions directly in most cases.
>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> ---
>
> The intent is to it like this:
>
> if (of_has_named_irqs(np) {
> /* Wake IRQ is optional */
> dev->wakeirq = of_irq_get_byname(np, "wakeup");
> if (dev->wakeirq < 0 && dev->wakeirq != -ENODATA)
> return dev->wakeirq;
> }
of_irq_get_byname will already return an error if the property is not
present. Use that.
Rob
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