linux-kernel - Re: [PATCH 1/7] can: m_can: m_can_plat_remove(): add missing pm_runtime

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: <DC69CAZD1X5T.XGQPHLBKGPTP@baylibre.com>
Date: Tue, 19 Aug 2025 10:22:45 +0200
From: "Markus Schneider-Pargmann" <msp@...libre.com>
To: "Marc Kleine-Budde" <mkl@...gutronix.de>, "Chandrasekar Ramakrishnan"
 <rcsekar@...sung.com>, "Vincent Mailhol" <mailhol.vincent@...adoo.fr>,
 "Patrik Flykt" <patrik.flykt@...ux.intel.com>, "Dong Aisheng"
 <b29396@...escale.com>, "Fengguang Wu" <fengguang.wu@...el.com>, "Varka
 Bhadram" <varkabhadram@...il.com>, "Wu Bo" <wubo.oduw@...il.com>, "Philipp
 Zabel" <p.zabel@...gutronix.de>
Cc: <linux-can@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
 <kernel@...gutronix.de>
Subject: Re: [PATCH 1/7] can: m_can: m_can_plat_remove(): add missing
 pm_runtime_disable()

On Tue Aug 12, 2025 at 7:36 PM CEST, Marc Kleine-Budde wrote:
> Commit 227619c3ff7c ("can: m_can: move runtime PM enable/disable to
> m_can_platform") moved the PM runtime enable from the m_can core
> driver into the m_can_platform.
>
> That patch forgot to move the pm_runtime_disable() to
> m_can_plat_remove(), so that unloading the m_can_platform driver
> causes an "Unbalanced pm_runtime_enable!" error message.
>
> Add the missing pm_runtime_disable() to m_can_plat_remove() to fix the
> problem.
>
> Cc: Patrik Flykt <patrik.flykt@...ux.intel.com>
> Fixes: 227619c3ff7c ("can: m_can: move runtime PM enable/disable to m_can_platform")
> Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>

Reviewed-by: Markus Schneider-Pargmann <msp@...libre.com>

> ---
>  drivers/net/can/m_can/m_can_platform.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/can/m_can/m_can_platform.c b/drivers/net/can/m_can/m_can_platform.c
> index b832566efda0..057eaa7b8b4b 100644
> --- a/drivers/net/can/m_can/m_can_platform.c
> +++ b/drivers/net/can/m_can/m_can_platform.c
> @@ -180,7 +180,7 @@ static void m_can_plat_remove(struct platform_device *pdev)
>  	struct m_can_classdev *mcan_class = &priv->cdev;
>  
>  	m_can_class_unregister(mcan_class);
> -
> +	pm_runtime_disable(mcan_class->dev);
>  	m_can_class_free_dev(mcan_class->net);
>  }
>  


Download attachment "signature.asc" of type "application/pgp-signature" (290 bytes)