Re: [PATCH v4 3/3] media: mali-c55: fix probe error path skipping pm_runtime_disable()

[Jacopo Mondi <jacopo.mondi@ideasonboard.com>]

Hi David

On Sat, Mar 28, 2026 at 03:14:52PM +0000, David Carlier wrote:
> When mali_c55_media_frameworks_init() fails, the goto target jumps to
> err_free_context_registers, skipping pm_runtime_disable() despite
> pm_runtime having already been enabled earlier in the function.
>
> Fix this by adding an err_pm_runtime_disable label and redirecting the
> frameworks init failure to it, so pm_runtime is properly unwound on
> that error path. The runtime PM status is also set back to suspended
> before disabling, to undo the pm_runtime_set_active() from probe.

Thanks

>
> Fixes: d5f281f3dd29 ("media: mali-c55: Add Mali-C55 ISP driver")
> Signed-off-by: David Carlier <devnexen@gmail.com>

Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>

Thanks
   j

> ---
>  drivers/media/platform/arm/mali-c55/mali-c55-core.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/platform/arm/mali-c55/mali-c55-core.c b/drivers/media/platform/arm/mali-c55/mali-c55-core.c
> index cf238bdf65c8..0f0043927cfa 100644
> --- a/drivers/media/platform/arm/mali-c55/mali-c55-core.c
> +++ b/drivers/media/platform/arm/mali-c55/mali-c55-core.c
> @@ -828,7 +828,7 @@ static int mali_c55_probe(struct platform_device *pdev)
>
>  	ret = mali_c55_media_frameworks_init(mali_c55);
>  	if (ret)
> -		goto err_free_context_registers;
> +		goto err_pm_runtime_disable;
>
>  	pm_runtime_idle(&pdev->dev);
>
> @@ -843,8 +843,9 @@ static int mali_c55_probe(struct platform_device *pdev)
>
>  err_deinit_media_frameworks:
>  	mali_c55_media_frameworks_deinit(mali_c55);
> +err_pm_runtime_disable:
> +	pm_runtime_set_suspended(&pdev->dev);
>  	pm_runtime_disable(&pdev->dev);
> -err_free_context_registers:
>  	kfree(mali_c55->context.registers);
>  err_power_off:
>  	__mali_c55_power_off(mali_c55);
> --
> 2.53.0
>