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From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: Marcelo Roberto Jimenez <marcelo.jimenez@gmail.com>,
	Thorsten Leemhuis <regressions@leemhuis.info>,
	stable <stable@vger.kernel.org>,
	regressions@lists.linux.dev,
	Linus Walleij <linus.walleij@linaro.org>,
	"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
	Thierry Reding <treding@nvidia.com>,
	Vidya Sagar <vidyas@nvidia.com>,
	Stephen Rothwell <sfr@canb.auug.org.au>,
	Edmond Chung <edmondchung@google.com>,
	Andrew Chant <achant@google.com>,
	Will McVicker <willmcvicker@google.com>,
	Sergio Tanzilli <tanzilli@acmesystems.it>
Subject: Re: [PATCH] gpio: Revert regression in sysfs-gpio (gpiolib.c)
Date: Mon, 20 Dec 2021 16:14:17 +0100	[thread overview]
Message-ID: <CAMuHMdVp621B0DywkW6sx6wNcPFez9=3-=cfSo7UoRttJ6QXCg@mail.gmail.com> (raw)
In-Reply-To: <CAMRc=MfAxzmAfATV2NwfTgpfmyxFx8bgTbaAfWxSi9zmBecPng@mail.gmail.com>

On Mon, Dec 20, 2021 at 3:57 PM Bartosz Golaszewski <brgl@bgdev.pl> wrote:
> On Sat, Dec 18, 2021 at 7:28 AM Thorsten Leemhuis
> <regressions@leemhuis.info> wrote:
> > [TLDR: I'm adding this regression to regzbot, the Linux kernel
> > regression tracking bot; most text you find below is compiled from a few
> > templates paragraphs some of you might have seen already.]
> >
> > On 17.12.21 16:35, Marcelo Roberto Jimenez wrote:
> > > Some GPIO lines have stopped working after the patch
> > > commit 2ab73c6d8323f ("gpio: Support GPIO controllers without pin-ranges")
> > >
> > > And this has supposedly been fixed in the following patches
> > > commit 89ad556b7f96a ("gpio: Avoid using pin ranges with !PINCTRL")
> > > commit 6dbbf84603961 ("gpiolib: Don't free if pin ranges are not defined")
> >
> > There seems to be a backstory here. Are there any entries and bug
> > trackers or earlier discussions everyone that looks into this should be
> > aware of?
> >
>
> Agreed with Thorsten. I'd like to first try to determine what's wrong
> before reverting those, as they are correct in theory but maybe the
> implementation missed something.
>
> Have you tried tracing the execution on your platform in order to see
> what the driver is doing?

Looking at commits that have related Fixes tags:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bf781869e5cf3e4ec1a47dad69b6f0df97629cbd
https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git/commit/?id=e8f24c58d1b69ecf410a673c22f546dc732bb879

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

  reply	other threads:[~2021-12-20 15:16 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-17 15:35 [PATCH] gpio: Revert regression in sysfs-gpio (gpiolib.c) Marcelo Roberto Jimenez
2021-12-18  6:28 ` Thorsten Leemhuis
2021-12-20 14:57   ` Bartosz Golaszewski
2021-12-20 15:14     ` Geert Uytterhoeven [this message]
2021-12-20 19:24       ` Will McVicker
2021-12-20 20:41         ` Marcelo Roberto Jimenez
2021-12-20 20:41       ` Marcelo Roberto Jimenez
2021-12-20 20:41     ` Marcelo Roberto Jimenez
2022-01-10  7:02       ` Thorsten Leemhuis
2022-01-12  0:09         ` Marcelo Roberto Jimenez
2022-02-08 12:24           ` Thorsten Leemhuis
2022-02-17 19:11           ` Thierry Reding
2022-02-11  0:02 ` Linus Walleij
2022-02-11 22:36   ` Marcelo Roberto Jimenez
2022-02-12 16:54     ` Linus Walleij
2022-02-13 23:23       ` Marcelo Roberto Jimenez
2022-02-15 21:56         ` Linus Walleij
2022-02-16 14:40           ` Bartosz Golaszewski
2022-03-04  7:13             ` Thorsten Leemhuis
2022-03-07  9:58               ` Bartosz Golaszewski
2022-03-07 10:12                 ` Thorsten Leemhuis
2022-05-20  9:12             ` Thorsten Leemhuis
2022-05-20 17:28               ` Marcelo Roberto Jimenez
2022-03-14 15:55 ` Michael Walle
2022-03-15 15:32   ` Bartosz Golaszewski
2022-03-15 15:45     ` Michael Walle
2022-03-17  8:37       ` Andy Shevchenko
2022-03-17  8:48         ` Michael Walle

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