511 	 * NOTE: The idea seems to have been to use this to read all the blob  in drm_mode_getproperty_ioctl()
514 	 * read the value for a blob property. It also doesn't make a lot of  in drm_mode_getproperty_ioctl()
526 	struct drm_property_blob *blob =  in drm_property_free_blob()  local
529 	mutex_lock(&blob->dev->mode_config.blob_lock);  in drm_property_free_blob()
530 	list_del(&blob->head_global);  in drm_property_free_blob()
531 	mutex_unlock(&blob->dev->mode_config.blob_lock);  in drm_property_free_blob()
533 	drm_mode_object_unregister(blob->dev, &blob->base);  in drm_property_free_blob()
535 	kvfree(blob);  in drm_property_free_blob()
539  * drm_property_create_blob - Create new blob property
541  * @length: Length to allocate for blob data
542  * @data: If specified, copies data into blob
544  * Creates a new blob property for a specified DRM device, optionally
545  * copying data. Note that blob properties are meant to be invariant, hence the
546  * data must be filled out before the blob is used as the value of any property.
549  * New blob property with a single reference on success, or an ERR_PTR
556 	struct drm_property_blob *blob;  in drm_property_create_blob()  local
562 	blob = kvzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);  in drm_property_create_blob()
563 	if (!blob)  in drm_property_create_blob()
568 	INIT_LIST_HEAD(&blob->head_file);  in drm_property_create_blob()
569 	blob->data = (void *)blob + sizeof(*blob);  in drm_property_create_blob()
570 	blob->length = length;  in drm_property_create_blob()
571 	blob->dev = dev;  in drm_property_create_blob()
574 		memcpy(blob->data, data, length);  in drm_property_create_blob()
576 	ret = __drm_mode_object_add(dev, &blob->base, DRM_MODE_OBJECT_BLOB,  in drm_property_create_blob()
579 		kvfree(blob);  in drm_property_create_blob()
584 	list_add_tail(&blob->head_global,  in drm_property_create_blob()
588 	return blob;  in drm_property_create_blob()
593  * drm_property_blob_put - release a blob property reference
594  * @blob: DRM blob property
596  * Releases a reference to a blob property. May free the object.
598 void drm_property_blob_put(struct drm_property_blob *blob)  in drm_property_blob_put()  argument
600 	if (!blob)  in drm_property_blob_put()
603 	drm_mode_object_put(&blob->base);  in drm_property_blob_put()
610 	struct drm_property_blob *blob, *bt;  in drm_property_destroy_user_blobs()  local
614 	 * blob list any more, so no need to grab dev->blob_lock.  in drm_property_destroy_user_blobs()
616 	list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {  in drm_property_destroy_user_blobs()
617 		list_del_init(&blob->head_file);  in drm_property_destroy_user_blobs()
618 		drm_property_blob_put(blob);  in drm_property_destroy_user_blobs()
623  * drm_property_blob_get - acquire blob property reference
624  * @blob: DRM blob property
626  * Acquires a reference to an existing blob property. Returns @blob, which
629 struct drm_property_blob *drm_property_blob_get(struct drm_property_blob *blob)  in drm_property_blob_get()  argument
631 	drm_mode_object_get(&blob->base);  in drm_property_blob_get()
632 	return blob;  in drm_property_blob_get()
637  * drm_property_lookup_blob - look up a blob property and take a reference
639  * @id: id of the blob property
641  * If successful, this takes an additional reference to the blob property.
646  * NULL on failure, pointer to the blob on success.
652 	struct drm_property_blob *blob = NULL;  in drm_property_lookup_blob()  local
656 		blob = obj_to_blob(obj);  in drm_property_lookup_blob()
657 	return blob;  in drm_property_lookup_blob()
662  * drm_property_replace_global_blob - replace existing blob property
664  * @replace: location of blob property pointer to be replaced
665  * @length: length of data for new blob, or 0 for no data
666  * @data: content for new blob, or NULL for no data
667  * @obj_holds_id: optional object for property holding blob ID
668  * @prop_holds_id: optional property holding blob ID
671  * This function will replace a global property in the blob list, optionally
674  * If length is 0 or data is NULL, no new blob will be created, and the holding
681  * of a blob property with the value of the MST path information. Calling this
730  * drm_property_replace_blob - replace a blob property
731  * @blob: a pointer to the member blob to be replaced
732  * @new_blob: the new blob to replace with
734  * Return: true if the blob was in fact replaced.
736 bool drm_property_replace_blob(struct drm_property_blob **blob,  in drm_property_replace_blob()  argument
739 	struct drm_property_blob *old_blob = *blob;  in drm_property_replace_blob()
747 	*blob = new_blob;  in drm_property_replace_blob()
756 	struct drm_property_blob *blob;  in drm_mode_getblob_ioctl()  local
762 	blob = drm_property_lookup_blob(dev, out_resp->blob_id);  in drm_mode_getblob_ioctl()
763 	if (!blob)  in drm_mode_getblob_ioctl()
766 	if (out_resp->length == blob->length) {  in drm_mode_getblob_ioctl()
768 				 blob->data,  in drm_mode_getblob_ioctl()
769 				 blob->length)) {  in drm_mode_getblob_ioctl()
774 	out_resp->length = blob->length;  in drm_mode_getblob_ioctl()
776 	drm_property_blob_put(blob);  in drm_mode_getblob_ioctl()
785 	struct drm_property_blob *blob;  in drm_mode_createblob_ioctl()  local
791 	blob = drm_property_create_blob(dev, out_resp->length, NULL);  in drm_mode_createblob_ioctl()
792 	if (IS_ERR(blob))  in drm_mode_createblob_ioctl()
793 		return PTR_ERR(blob);  in drm_mode_createblob_ioctl()
795 	if (copy_from_user(blob->data,  in drm_mode_createblob_ioctl()
803 	 * as only the same file_priv can remove the blob; at this point, it is  in drm_mode_createblob_ioctl()
806 	out_resp->blob_id = blob->base.id;  in drm_mode_createblob_ioctl()
807 	list_add_tail(&blob->head_file, &file_priv->blobs);  in drm_mode_createblob_ioctl()
813 	drm_property_blob_put(blob);  in drm_mode_createblob_ioctl()
821 	struct drm_property_blob *blob = NULL, *bt;  in drm_mode_destroyblob_ioctl()  local
828 	blob = drm_property_lookup_blob(dev, out_resp->blob_id);  in drm_mode_destroyblob_ioctl()
829 	if (!blob)  in drm_mode_destroyblob_ioctl()
835 		if (bt == blob) {  in drm_mode_destroyblob_ioctl()
847 	 * reference on the blob. */  in drm_mode_destroyblob_ioctl()
848 	list_del_init(&blob->head_file);  in drm_mode_destroyblob_ioctl()
852 	drm_property_blob_put(blob);  in drm_mode_destroyblob_ioctl()
853 	drm_property_blob_put(blob);  in drm_mode_destroyblob_ioctl()
859 	drm_property_blob_put(blob);  in drm_mode_destroyblob_ioctl()
900 		struct drm_property_blob *blob;  in drm_property_change_valid_get()  local
905 		blob = drm_property_lookup_blob(property->dev, value);  in drm_property_change_valid_get()
906 		if (blob) {  in drm_property_change_valid_get()
907 			*ref = &blob->base;  in drm_property_change_valid_get()