250  * and @pad1. If two pads are interdependent they are part of the same pipeline
427  * Pipeline management
431  * The pipeline traversal stack stores pads that are reached during graph
436  * To find further pads in the pipeline, the traversal algorithm follows
444  * struct media_pipeline_walk_entry - Entry in the pipeline traversal stack
455  * struct media_pipeline_walk - State used by the media pipeline traversal
530 		"media pipeline: pushed entry %u: '%s':%u\n",  in media_pipeline_walk_push()
552 			"media pipeline: entry %u has no more links, popping\n",  in media_pipeline_walk_pop()
562 		"media pipeline: moved entry %u to next link\n",  in media_pipeline_walk_pop()
568 /* Free all memory allocated while walking the pipeline. */
574 /* Add a pad to the pipeline and push it to the stack. */
584 				"media pipeline: already contains pad '%s':%u\n",  in media_pipeline_add_pad()
600 		"media pipeline: added pad '%s':%u\n",  in media_pipeline_add_pad()
624 			"media pipeline: skipping link (not data-link)\n");  in media_pipeline_explore_next_link()
629 		"media pipeline: exploring link '%s':%u -> '%s':%u\n",  in media_pipeline_explore_next_link()
650 			"media pipeline: skipping link (no route)\n");  in media_pipeline_explore_next_link()
655 	 * Add the local pad of the link to the pipeline and push it to the  in media_pipeline_explore_next_link()
665 			"media pipeline: skipping link (disabled)\n");  in media_pipeline_explore_next_link()
677 	 * link. Those are dead ends from a pipeline exploration point of view,  in media_pipeline_explore_next_link()
678 	 * but are still part of the pipeline and need to be added to enable  in media_pipeline_explore_next_link()
685 		"media pipeline: adding unconnected pads of '%s' reachable from pad %u\n",  in media_pipeline_explore_next_link()
726 	 * Populate the media pipeline by walking the media graph, starting  in media_pipeline_populate()
752 		"media pipeline populated, found pads:\n");  in media_pipeline_populate()
782 	 * If the pad is already part of a pipeline, that pipeline must be the  in __media_pipeline_start()
789 	 * If the pipeline has already been started, it is guaranteed to be  in __media_pipeline_start()
798 	 * Populate the pipeline. This populates the media_pipeline pads list  in __media_pipeline_start()
807 	 * Now that all the pads in the pipeline have been gathered, perform  in __media_pipeline_start()
822 		 * pipeline.  in __media_pipeline_start()
825 			dev_dbg(mdev->dev, "Failed to start pipeline: pad '%s':%u busy\n",  in __media_pipeline_start()
975 	 * Is the pad already part of a pipeline? If not, we need to allocate  in media_pipeline_alloc_start()