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@linux.intel.com>
> Fixes: 227619c3ff7c ("can: m_can: move runtime PM enable/disable to m_can_platform")
> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

Reviewed-by: Markus Schneider-Pargmann <msp@baylibre.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);
>  }
>