linux-kernel - Re: [PATCH v3 1/3] iio: temperature: mlx90632 Add runtime powermanagement modes

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Date:   Tue, 6 Sep 2022 15:04:16 +0200
From:   Crt Mori <cmo@...exis.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        linux-iio <linux-iio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 1/3] iio: temperature: mlx90632 Add runtime
 powermanagement modes

On Tue, 6 Sept 2022 at 14:37, Andy Shevchenko <andy.shevchenko@...il.com> wrote:
>
> On Tue, Sep 6, 2022 at 1:52 PM Crt Mori <cmo@...exis.com> wrote:
> > On Tue, 6 Sept 2022 at 12:21, Andy Shevchenko <andy.shevchenko@...il.com> wrote:
> > >
> > > Very good and documented code, thanks!
> > > I believe you better to use DEFINE_.*_PM_OPS instead of legacy ones
> > > (due to pm_ptr() usage).
> > > Otherwise, with some nitpicks that wouldn't prevent a green light,
> > > Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
> > >
> > I checked DEFINE_.*_PM_OPS usage around drivers and you either have
> > SIMPLE (where you define suspend/resume) or you have RUNTIME (for
> > runtime suspend/resume), but never are those two together. So I am a
> > bit puzzled how to get this working.
>
> The one which suits here is called _DEFINE_DEV_PM_OPS(). But it's
> basically the same what you put here with the possible unused case.
>
I thought underscore prefixed macros are the ones not to be used
directly by drivers. I also found no occurrence in current drivers, so
it was not something that was done so far?