30  * There are functions to activate and deactivate the streaming URBs and
49  * only the first user will effectively start the URBs, and only the last
50  * one to stop it will tear the URBs down again.
321  * Send output urbs that have been prepared previously. URBs are dequeued
326  * The reason why the functionality of sending and preparing URBs is separated
331  * driven by dedicated sync endpoints, URBs are immediately re-submitted
379  * complete callback for urbs
535  *  wait until all urbs are processed.
552 			"timeout: still %d active urbs on EP #%x\n",  in wait_clear_urbs()
574  * unlink active urbs.
599  * release an endpoint's urbs
605 	/* route incoming urbs to nirvana */  in release_urbs()
609 	/* stop urbs */  in release_urbs()
721 	 * Capture endpoints need to use small URBs because there's no way  in check_ep_params()
746 		/* make capture URBs <= 1 ms and smaller than a period */  in check_ep_params()
755 	 * URBs.  The total number of URBs is adjusted to the size of the  in check_ep_params()
770 		/* how many URBs will contain a period? */  in check_ep_params()
780 		/* try to use enough URBs to contain an entire ALSA buffer */  in check_ep_params()
892 	 * Capture endpoints need to use small URBs because there's no way  in data_ep_set_params()
916 		/* make capture URBs <= 1 ms and smaller than a period */  in data_ep_set_params()
925 	 * URBs.  The total number of URBs is adjusted to the size of the  in data_ep_set_params()
940 		/* how many URBs will contain a period? */  in data_ep_set_params()
950 		/* try to use enough URBs to contain an entire ALSA buffer */  in data_ep_set_params()
956 	/* allocate and initialize data urbs */  in data_ep_set_params()
1042  * Determine the number of URBs to be used on this endpoint.
1117 		"Setting params for ep #%x (type %d, %d urbs), ret=%d\n",  in snd_usb_endpoint_set_params()
1129  * In case it is not already running, the URBs for this endpoint will be
1160 	 * don't start the urbs here. Instead, mark them all as available,  in snd_usb_endpoint_start()
1161 	 * wait for the record urbs to return and queue the playback urbs  in snd_usb_endpoint_start()
1213  * In case the last user has requested the endpoint stop, the URBs will
1241  * deactivate its associated URBs.
1263  * down all the streaming URBs immediately.
1305 	 * and add it to the list of pending urbs. queue_pending_output_urbs()  in snd_usb_handle_sync_urb()