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From: Andy Shevchenko <andy.shevchenko@gmail.com>
Date: Wed, 22 May 2024 10:13:33 +0300
Message-ID: <CAHp75Vcs3DvBK3P058gU6L-24Q9PTrPg_hLujxaUGHNB=JCW0A@mail.gmail.com>
Subject: Re: [PATCH 11/13] mfd: pm8008: rework driver
To: Johan Hovold <johan@kernel.org>
Cc: Johan Hovold <johan+linaro@kernel.org>, Lee Jones <lee@kernel.org>, 
	Mark Brown <broonie@kernel.org>, Linus Walleij <linus.walleij@linaro.org>, 
	Bjorn Andersson <andersson@kernel.org>, Konrad Dybcio <konrad.dybcio@linaro.org>, 
	Rob Herring <robh@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>, Conor Dooley <conor+dt@kernel.org>, 
	Liam Girdwood <lgirdwood@gmail.com>, Das Srinagesh <quic_gurus@quicinc.com>, 
	Satya Priya <quic_c_skakit@quicinc.com>, Stephen Boyd <swboyd@chromium.org>, 
	linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, 
	linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org
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On Wed, May 22, 2024 at 9:49=E2=80=AFAM Johan Hovold <johan@kernel.org> wro=
te:
> On Fri, May 10, 2024 at 04:15:43PM +0300, Andy Shevchenko wrote:
> > On Thu, May 9, 2024 at 12:42=E2=80=AFPM Johan Hovold <johan@kernel.org>=
 wrote:
> > > On Mon, May 06, 2024 at 10:18:58PM +0300, Andy Shevchenko wrote:
> > > > Mon, May 06, 2024 at 05:08:28PM +0200, Johan Hovold kirjoitti:

..

> > > > > +static void devm_irq_domain_fwnode_release(void *res)
> > > > > +{
> > > >
> > > > > +   struct fwnode_handle *fwnode =3D res;
> > > >
> > > > Unneeded line, can be
> > > >
> > > > static void devm_irq_domain_fwnode_release(void *fwnode)
> > > >
> > > > > +   irq_domain_free_fwnode(fwnode);
> > > > > +}
> > >
> > > I think I prefer it this way for clarity and for type safety in the
> > > unlikely even that the argument to irq_domain_free_fwnode() would eve=
r
> > > change.
> >
> > If it ever changes, the allocation part most likely would need an
> > update and since devm_add_action() takes this type of function, I
> > don't believe the argument would ever change from void * to something
> > else. With this it just adds an additional burden on the conversion.
>
> I was referring to the irq_domain_free_fwnode() prototype.

And I also referred to that one. The release callback, i.e. the type
of the parameter, is solely defined by a caller of devm_add_action()
end friends, and in this case it means that if ever the type changes
(this is your argument why you want to have explicit line for that,
necessity of which I oppose) the devm_add_action() arguments also has
to be changed, it can't be done _just_ there, in
irq_domain_free_fwnode().

> > > > > +   name =3D devm_kasprintf(dev, GFP_KERNEL, "%pOF-internal", dev=
->of_node);
> > > >
> > > > You are using fwnode for IRQ domain and IRQ domain core uses fwnode=
, why OF here?
> > > >
> > > >       name =3D devm_kasprintf(dev, GFP_KERNEL, "%pfw-internal", dev=
_fwnode(dev));
> > >
> > > This driver only support OF so why bother.
> >
> > Sure, but it makes a bit of inconsistency.
>
> No, I don't consider this an inconsistency. Again, *this* is an OF
> driver, other subsystems need to deal with ACPI and use fwnode.

OK.


--=20
With Best Regards,
Andy Shevchenko