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SubjectRe: [PATCH 1/2] drm: Allow mode object properties to be added after a device is registered
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@amd.com>
> Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3353
> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
> ---
> 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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