Re: [PATCH 2/4] gpio: Drop parent irq assignment during cascade setup

[Linus Walleij]

On Mon, Oct 8, 2018 at 6:32 PM Stephen Boyd <swboyd@xxxxxxxxxxxx> wrote:

> We want to set the irq parent for interrupts that we're setting up to be
> cascaded from another interrupt controller, but we may or may not have
> already mapped the gpiochip irqs into the kernel's virtual irq number
> space at this point. If we have mapped irqs before calling here, then
> we've gone through gpiochip_irq_map() and called irq_set_parent()
> already. If we haven't mapped irqs, then the gpiochip is dynamically
> mapping irqs and we can rely on gpiochip_irq_map() or the gpio driver's
> irqdomain ops to setup the irq parent properly.
>
> Either way, setting the parent here when cascading the gpiochip doesn't
> make much sense because it should be done at irq mapping time. In the
> dynamic mapping case, this code is mapping virq 0 to some parent virq in
> a loop. While that's benign, let's drop this code to simplify.
>
> Cc: Evan Green <evgreen@xxxxxxxxxxxx>
> Cc: Thierry Reding <treding@xxxxxxxxxx>
> Cc: Grygorii Strashko <grygorii.strashko@xxxxxx>
> Signed-off-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>

Yep this is some leftover from the past.

Patch applied!

Yours,
Linus Walleij