Re: [PATCH 1/2] drm: Allow mode object properties to be added after a device is registered

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On Wed, May 08, 2024 at 02:43:07PM -0500, Mario Limonciello wrote:
> When the colorspace property is registered on MST devices there is
> no `obj_free_cb` callback for it in drm_mode_object_add().
> 
> Don't show a warning trace for __drm_mode_object_add() calls for
> DRM_MODE_OBJECT_PROPERTY.

You need to create the property ahead of time. See eg.
commit 1b9bd09630d4 ("drm/i915: Do not create a new max_bpc prop for MST
connectors")

> 
> Reported-and-tested-by: Tyler Schneider <tyler.schneider@xxxxxxx>
> Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3353
> Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
> ---
>  drivers/gpu/drm/drm_mode_object.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/drm_mode_object.c b/drivers/gpu/drm/drm_mode_object.c
> index 0e8355063eee..b077547a2db4 100644
> --- a/drivers/gpu/drm/drm_mode_object.c
> +++ b/drivers/gpu/drm/drm_mode_object.c
> @@ -42,7 +42,7 @@ int __drm_mode_object_add(struct drm_device *dev, struct drm_mode_object *obj,
>  {
>  	int ret;
>  
> -	WARN_ON(!dev->driver->load && dev->registered && !obj_free_cb);
> +	WARN_ON(!dev->driver->load && dev->registered && !obj_free_cb && obj_type != DRM_MODE_OBJECT_PROPERTY);
>  
>  	mutex_lock(&dev->mode_config.idr_mutex);
>  	ret = idr_alloc(&dev->mode_config.object_idr, register_obj ? obj : NULL,
> -- 
> 2.43.0

-- 
Ville Syrjälä
Intel



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