linux-kernel - Re: [PATCH RFC 0/9] gpio: improve support for shared GPIOs

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: <5550fc25-b571-489c-9855-5a9b08822c0e@sirena.org.uk>
Date: Mon, 6 Oct 2025 13:19:30 +0100
From: Mark Brown <broonie@...nel.org>
To: Srinivas Kandagatla <srini@...nel.org>
Cc: Bartosz Golaszewski <brgl@...ev.pl>, Kees Cook <kees@...nel.org>,
	Mika Westerberg <westeri@...nel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Manivannan Sadhasivam <mani@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Saravana Kannan <saravanak@...gle.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Andy Shevchenko <andy@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>, Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
	linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-sound@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH RFC 0/9] gpio: improve support for shared GPIOs

On Sat, Oct 04, 2025 at 02:31:16PM +0100, Srinivas Kandagatla wrote:

> Isn't the main issue here is about not using a correct framework around
> to the gpios that driver uses. ex: the codec usecase that you are
> refering in this is using gpio to reset the line, instead of using a
> proper gpio-reset control. same with some of the gpio-muxes. the problem
> is fixed once such direct users of gpio are move their correct frameworks.

It's common to have GPIO controls for other things, mutes for example.

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)