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

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Message-ID: <ZcYvycJ9wXfKIGYg@smile.fi.intel.com>
Date: Fri, 9 Feb 2024 15:59:37 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Bartosz Golaszewski <brgl@...ev.pl>
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 08, 2024 at 08:34:56PM +0100, Bartosz Golaszewski wrote:
> 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.

Yeah, but just think about it.

-- 
With Best Regards,
Andy Shevchenko