[PATCH 1/6] drm/bridge: aux-hpd: fix OF node leaks

Markus Elfring Markus.Elfring at web.de
Mon Feb 19 09:48:30 PST 2024


> The two device node references taken during allocation need to be
> dropped when the auxiliary device is freed.
…
> +++ b/drivers/gpu/drm/bridge/aux-hpd-bridge.c
…
> @@ -74,6 +75,8 @@ struct device *drm_dp_hpd_bridge_register(struct device *parent,
>
>  	ret = auxiliary_device_init(adev);
>  	if (ret) {
> +		of_node_put(adev->dev.platform_data);
> +		of_node_put(adev->dev.of_node);
>  		ida_free(&drm_aux_hpd_bridge_ida, adev->id);
>  		kfree(adev);
>  		return ERR_PTR(ret);

The last two statements are also used in a previous if branch.
https://elixir.bootlin.com/linux/v6.8-rc5/source/drivers/gpu/drm/bridge/aux-hpd-bridge.c#L63

How do you think about to avoid such a bit of duplicate source code
by adding a label here?

Regards,
Markus



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