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From: Philipp Zabel <p.zabel@pengutronix.de>
To: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Shuah Khan <skhan@linuxfoundation.org>
Cc: linux-kernel@vger.kernel.org, brgl@kernel.org, linux-doc@vger.kernel.org
Subject: Re: [PATCH v3 05/14] reset: warn on reset-gpio release
Date: Mon, 09 Mar 2026 10:21:28 +0100	[thread overview]
Message-ID: <d8e0055d62ce135b0792886805fe539c8b8b209d.camel@pengutronix.de> (raw)
In-Reply-To: <20260306-reset-core-refactor-v3-5-599349522876@oss.qualcomm.com>

On Fr, 2026-03-06 at 18:22 +0100, Bartosz Golaszewski wrote:
> While we implement an empty .release() callback for reset-gpio (driver
> core requires it), this function will never actually be called as nobody
> ever removes the device and the last reference is not dropped anywhere.
> 
> This is by design - once created, the reset-gpio device stays in memory.
> Make the .release() callback emit a warning, should it ever be called
> due to a programming bug.
> 
> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
> ---
>  drivers/reset/core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/reset/core.c b/drivers/reset/core.c
> index 954df36a242e804b639027384700b8d988be0e90..3e55f794d539e4edc99104cb5396cac72ba30618 100644
> --- a/drivers/reset/core.c
> +++ b/drivers/reset/core.c
> @@ -820,7 +820,7 @@ static void __reset_control_put_internal(struct reset_control *rstc)
>  
>  static void reset_gpio_aux_device_release(struct device *dev)
>  {
> -
> +	WARN("reset-gpio device %s should never have been removed", dev_name(dev));

I'll change this to

	WARN(1, "reset-gpio device %s should never have been removed", dev_name(dev));

when applying.

regards
Philipp

  reply	other threads:[~2026-03-09  9:21 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-06 17:22 [PATCH v3 00/14] reset: major reset core refactoring Bartosz Golaszewski
2026-03-06 17:22 ` [PATCH v3 01/14] reset: gpio: remove unneeded OF-node put Bartosz Golaszewski
2026-03-06 17:22 ` [PATCH v3 02/14] reset: gpio: add a devlink between reset-gpio and its consumer Bartosz Golaszewski
2026-03-06 17:22 ` [PATCH v3 03/14] reset: gpio: simplify fallback device matching Bartosz Golaszewski
2026-03-06 17:22 ` [PATCH v3 04/14] reset: gpio: remove unneeded auxiliary_set_drvdata() Bartosz Golaszewski
2026-03-06 17:22 ` [PATCH v3 05/14] reset: warn on reset-gpio release Bartosz Golaszewski
2026-03-09  9:21   ` Philipp Zabel [this message]
2026-03-06 17:22 ` [PATCH v3 06/14] reset: fold ida_alloc() into reset_create_gpio_aux_device() Bartosz Golaszewski
2026-03-09  7:47   ` Philipp Zabel
2026-03-06 17:22 ` [PATCH v3 07/14] reset: use lock guards in reset core Bartosz Golaszewski
2026-03-06 17:22 ` [PATCH v3 08/14] reset: handle removing supplier before consumers Bartosz Golaszewski
2026-03-09  7:47   ` Philipp Zabel
2026-03-06 17:22 ` [PATCH v3 09/14] reset: protect struct reset_controller_dev with its own mutex Bartosz Golaszewski
2026-03-09  8:01   ` Philipp Zabel
2026-03-06 17:22 ` [PATCH v3 10/14] reset: protect struct reset_control " Bartosz Golaszewski
2026-03-09  8:01   ` Philipp Zabel
2026-03-06 17:22 ` [PATCH v3 11/14] reset: convert of_reset_control_get_count() to using firmware nodes Bartosz Golaszewski
2026-03-06 17:22 ` [PATCH v3 12/14] reset: convert the core API " Bartosz Golaszewski
2026-03-06 17:22 ` [PATCH v3 13/14] reset: convert reset core " Bartosz Golaszewski
2026-03-09  8:01   ` Philipp Zabel
2026-03-10 14:16   ` Mark Brown
2026-03-10 14:48     ` Philipp Zabel
2026-03-10 14:53       ` Bartosz Golaszewski
2026-03-10 15:00   ` Geert Uytterhoeven
2026-03-11 15:47   ` Tommaso Merciai
2026-03-11 15:54     ` Bartosz Golaszewski
2026-03-11 16:06       ` Tommaso Merciai
2026-03-06 17:22 ` [PATCH v3 14/14] reset: gpio: make the driver fwnode-agnostic Bartosz Golaszewski
2026-03-09  9:25 ` [PATCH v3 00/14] reset: major reset core refactoring Philipp Zabel
2026-03-09  9:34   ` Bartosz Golaszewski

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