Re: [PATCH 01/14] gpio: pca953x: move suspend/resume to suspend_noirq/resume_noirq

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Fri, Feb 9, 2024 at 8:44 AM Thomas Richard
<thomas.richard@xxxxxxxxxxx> wrote:

> > *FIRST* we should check if putting the callbacks to noirq is fine with
> > other systems too, and I don't see why not. Perhaps we need to even
> > merge it if we don't get any test results.
> >
> > If it doesn't work we can think of other options.
>
> I think all systems using a i2c controller which uses autosuspend should
> be impacted.
> I guess a patch (like I did in this series for i2c-omap [1]) should be
> applied for all i2c controller which use autosuspend.
>
> [1]
> https://lore.kernel.org/all/hqnxyffdsiqz5t43bexcqrwmynpjubxbzjchjaagxecso75dc7@y7lznovxg3go/

I think this is the right thing to do.

Maybe we should just go over all of them? (Also SPI controllers?)

We will soon merge a patch to move the pinctrl-single PM to noirq, and
that actually affects more than just OMAP, it also has effect on e.g.
HiSilicon so we can expect a bit of shakeout unless we take a global
approach to this.

Yours,
Linus Walleij