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

[Neil Armstrong]

On 17/02/2024 16:02, Johan Hovold wrote:
> The two device node references taken during allocation need to be
> dropped when the auxiliary device is freed.
>
> Fixes: 6914968a0b52 ("drm/bridge: properly refcount DT nodes in aux bridge drivers")
> Cc: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
> Cc: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
> Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
> ---
>   drivers/gpu/drm/bridge/aux-hpd-bridge.c | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/bridge/aux-hpd-bridge.c b/drivers/gpu/drm/bridge/aux-hpd-bridge.c
> index bb55f697a181..9e71daf95bde 100644
> --- a/drivers/gpu/drm/bridge/aux-hpd-bridge.c
> +++ b/drivers/gpu/drm/bridge/aux-hpd-bridge.c
> @@ -25,6 +25,7 @@ static void drm_aux_hpd_bridge_release(struct device *dev)
>   	ida_free(&drm_aux_hpd_bridge_ida, adev->id);
>   
>   	of_node_put(adev->dev.platform_data);
> +	of_node_put(adev->dev.of_node);
>   
>   	kfree(adev);
>   }
> @@ -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);

Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>