linux-kernel - Re: [PATCH] pinctrl: meson: amlogic-a4: mark the GPIO controller as sleeping

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Message-ID: <CAD++jLmdBefq9JJrfw27Y-FkvywJ9bzJBSOo1RXmS0HjoC5h+Q@mail.gmail.com>
Date: Fri, 9 Jan 2026 10:35:14 +0100
From: Linus Walleij <linusw@...nel.org>
To: Bartosz Golaszewski <bartosz.golaszewski@....qualcomm.com>
Cc: Neil Armstrong <neil.armstrong@...aro.org>, Kevin Hilman <khilman@...libre.com>, 
	Jerome Brunet <jbrunet@...libre.com>, 
	Martin Blumenstingl <martin.blumenstingl@...glemail.com>, Bartosz Golaszewski <brgl@...nel.org>, 
	linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	stable@...r.kernel.org
Subject: Re: [PATCH] pinctrl: meson: amlogic-a4: mark the GPIO controller as sleeping

On Tue, Jan 6, 2026 at 9:53 AM Bartosz Golaszewski
<bartosz.golaszewski@....qualcomm.com> wrote:

> The GPIO controller is configured as non-sleeping but it uses generic
> pinctrl helpers which use a mutex for synchronization. This will cause
> lockdep splats when used together with shared GPIOs going through the
> GPIO shared proxy driver.

BTW it is a very *welcome* side-effect of the new shared GPIO rework
that it just happens to find these old bugs, I'm very pleased with this :)

Yours,
Linus Walleij