[PATCH v3 08/11] drm/connector: Warn if a connector is registered/added incorrectly

[Jani Nikula]

On Thu, 12 Dec 2024, Imre Deak <imre.deak at intel.com> wrote:
> All the drivers should be converted now to use
> drm_connector_dynamic_init() for MST connectors, hence
> drm_connector_dynamic_register()->drm_connector_add() can WARN now if
> this was not the case (for instance if a driver inited an MST connector
> with one of the drm_connector_init*() functions incorrectly).
>
> Signed-off-by: Imre Deak <imre.deak at intel.com>

Reviewed-by: Jani Nikula <jani.nikula at intel.com>

> ---
>  drivers/gpu/drm/drm_connector.c | 6 +-----
>  1 file changed, 1 insertion(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
> index c322dbf6e3161..1bd7407223fbb 100644
> --- a/drivers/gpu/drm/drm_connector.c
> +++ b/drivers/gpu/drm/drm_connector.c
> @@ -330,11 +330,7 @@ static void drm_connector_add(struct drm_connector *connector)
>  	struct drm_device *dev = connector->dev;
>  	struct drm_mode_config *config = &dev->mode_config;
>  
> -	/*
> -	 * TODO: Change this to a WARN, once all drivers are converted to
> -	 * call drm_connector_dynamic_init() for MST connectors.
> -	 */
> -	if (!list_empty(&connector->head))
> +	if (drm_WARN_ON(dev, !list_empty(&connector->head)))
>  		return;
>  
>  	spin_lock_irq(&config->connector_list_lock);

-- 
Jani Nikula, Intel