Re: [PATCH 4/9] pinctrl: meson: allow gpio to request irq

From: Linus Walleij
Date: Fri Nov 04 2016 - 10:40:59 EST

On Wed, Oct 26, 2016 at 5:50 PM, Kevin Hilman <khilman@xxxxxxxxxxxx> wrote:

>> Yes they are all wrong. They should all be using irq_find_mapping().
> So, dumb question from someone trying (but having a hard time) to follow
> and understand the rationale...
> If it's wrong enough to completely reject, why are changes still being
> merged that are doing it so wrong? (e.g. like this one[1], just merged
> for v4.9)

It's a bug.

It's that problem that Wolfram brought up in a recent lecture
about maintainer scaling: if noone but the subsystem maintainer
reviews the code, things like this will happen.

I need more review...

> [1] 0eb9f683336d pinctrl: Add IRQ support to STM32 gpios

Alexandre, Maxime: can you please make a patch for the STM32
driver that remove the semantic dependence for .to_irq() to be called
before an interrupt can be used? It should be possible to use
the irqs directly from the irqchip.

Linus Walleij