linux-kernel - Re: [PATCH v2] gpio: shared: handle the reset-gpios corner case

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] [day] [month] [year] [list]

Message-ID: <176423169902.7348.9978985875894103087.b4-ty@linaro.org>
Date: Thu, 27 Nov 2025 09:21:41 +0100
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Val Packett <val@...kett.cool>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...nel.org>,
	Bartosz Golaszewski <brgl@...ev.pl>
Cc: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
	linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v2] gpio: shared: handle the reset-gpios corner case

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>


On Tue, 25 Nov 2025 11:19:09 +0100, Bartosz Golaszewski wrote:
> There's an unexpected interaction between the reset-gpio driver and the
> shared GPIO support. The reset-gpio device is an auxiliary device that's
> created dynamically and fulfills a similar role to the gpio-shared-proxy
> driver but is limited in scope to just supporting the "reset-gpios"
> property.
> 
> The shared GPIO core code does not take into account that the machine
> lookup entry we create when scanning the device-tree must connect the
> reset-gpio device - that is the actual consumer of the GPIO and not the
> consumer defined on the device tree, which in turn consumes the shared
> reset control exposed by the reset-gpio device - to the GPIO controller.
> 
> [...]

Applied, thanks!

[1/1] gpio: shared: handle the reset-gpios corner case
      https://git.kernel.org/brgl/linux/c/7b78b26757e0d997b31635d76eaa46d5ef5e1431

Best regards,
-- 
Bartosz Golaszewski <bartosz.golaszewski@...aro.org>