linux-kernel - Re: Linux logs new warning `gpio gpiochip0: gpiochip_add_data_with_key: get

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAMRc=Mf-ObnFzau9OO1RvsdJ-pj4Tq2BSjVvCXkHgkK2t5DECQ@mail.gmail.com>
Date: Sun, 23 Feb 2025 21:54:49 +0100
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Paul Menzel <pmenzel@...gen.mpg.de>
Cc: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>, 
	Linus Walleij <linus.walleij@...aro.org>, linux-gpio@...r.kernel.org, 
	LKML <linux-kernel@...r.kernel.org>, linux-pci@...r.kernel.org, 
	regressions@...ts.linux.dev
Subject: Re: Linux logs new warning `gpio gpiochip0: gpiochip_add_data_with_key:
 get_direction failed: -22`

On Fri, Feb 21, 2025 at 10:02 PM Paul Menzel <pmenzel@...gen.mpg.de> wrote:
>
> > What GPIO driver is it using? It's likely that it's not using the
> > provider API correctly and this change uncovered it, I'd like to take
> > a look at it and fix it.
>
> How do I find out? The commands below do not return anything.
>
>      $ lsmod | grep gpio
>      $ lspci -nn | grep -i gpio
>      $ sudo dmesg | grep gpio
>      [    5.150955] gpio gpiochip0: gpiochip_add_data_with_key:
> get_direction failed: -22
>      [Just these lines match.]
>
>
> Kind regards,
>
> Paul

If you have libgpiod-tools installed, you can post the output of
gpiodetect here.

Bart