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

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Message-ID: <81bda56c-f18b-4bd9-abf9-9da7c2251f42@sirena.org.uk>
Date: Fri, 17 Oct 2025 18:32:17 +0100
From: Mark Brown <broonie@...nel.org>
To: Bartosz Golaszewski <brgl@...ev.pl>
Cc: 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>,
	Srinivas Kandagatla <srini@...nel.org>, Kees Cook <kees@...nel.org>,
	Mika Westerberg <westeri@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>,
	Catalin Marinas <catalin.marinas@....com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Takashi Iwai <tiwai@...e.com>, Rob Herring <robh@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Andy Shevchenko <andy@...nel.org>,
	Saravana Kannan <saravanak@...gle.com>,
	Will Deacon <will@...nel.org>, Liam Girdwood <lgirdwood@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Manivannan Sadhasivam <mani@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Subject: Re: [PATCH RFC 0/9] gpio: improve support for shared GPIOs

On Fri, Oct 17, 2025 at 07:26:51PM +0200, Bartosz Golaszewski wrote:

> Upon a closer inspection it turns out that this is not the case - the
> ENABLE/DISABLE events are emitted when the *logical* regulator is
> enabled/disabled even if this does not involve a change in the state
> of the shared pin.

It really should be the actual physical state change that triggers the
event.

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