linux-kernel - Re: [PATCH v3 19/24] gpio: remove unnecessary checks from gpiod_to

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Message-ID: <CAMRc=Me75F3KmTJbiNZKXNpwU0a_fSd3UffWORwXzDLKAMcXag@mail.gmail.com>
Date: Thu, 8 Feb 2024 20:34:56 +0100
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Linus Walleij <linus.walleij@...aro.org>, Kent Gibson <warthog618@...il.com>, 
	Alex Elder <elder@...aro.org>, Geert Uytterhoeven <geert+renesas@...der.be>, 
	"Paul E . McKenney" <paulmck@...nel.org>, Wolfram Sang <wsa@...-dreams.de>, linux-gpio@...r.kernel.org, 
	linux-kernel@...r.kernel.org, 
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v3 19/24] gpio: remove unnecessary checks from gpiod_to_chip()

On Thu, Feb 8, 2024 at 8:24 PM Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:
>
> On Thu, Feb 08, 2024 at 08:17:14PM +0100, Bartosz Golaszewski wrote:
> > On Thu, Feb 8, 2024 at 6:39 PM Andy Shevchenko
> > <andriy.shevchenko@...ux.intel.com> wrote:
> > > On Thu, Feb 08, 2024 at 10:59:15AM +0100, Bartosz Golaszewski wrote:
>
> ...
>
> > > > -     if (!desc || IS_ERR(desc) || !desc->gdev || !desc->gdev->chip)
> > > > +     if (!desc || IS_ERR(desc))
> > >
> > > IS_ERR_OR_NULL()
> >
> > Ah, good point. It's a small nit though so I'll fix it when applying
> > barring some major objections for the rest.
> >
> > > >               return -EINVAL;
>
> thinking more about it, shouldn't we return an actual error to the caller which
> is in desc?
>
>      if (!desc)
>                return -EINVAL;
>      if (IS_ERR(desc))
>         return PTR_ERR(desc);
>
> ?

Hmm... maybe but that's out of the scope of this series.

Bart

>
> --
> With Best Regards,
> Andy Shevchenko
>
>