53  * There are functions to activate and deactivate the streaming URBs and
72  * only the first user will effectively start the URBs, and only the last
73  * one to stop it will tear the URBs down again.
451  * Send output urbs that have been prepared previously. URBs are dequeued
456  * The reason why the functionality of sending and preparing URBs is separated
536  * complete callback for urbs
995  *  wait until all urbs are processed.
1015 			"timeout: still %d active urbs on EP #%x\n",  in wait_clear_urbs()
1036  * Stop active urbs
1073  * release an endpoint's urbs
1079 	/* route incoming urbs to nirvana */  in release_urbs()
1082 	/* stop and unlink urbs */  in release_urbs()
1195 	 * Capture endpoints need to use small URBs because there's no way  in data_ep_set_params()
1204 		/* make capture URBs <= 1 ms and smaller than a period */  in data_ep_set_params()
1213 	 * URBs.  The total number of URBs is adjusted to the size of the  in data_ep_set_params()
1228 		/* how many URBs will contain a period? */  in data_ep_set_params()
1238 		/* try to use enough URBs to contain an entire ALSA buffer */  in data_ep_set_params()
1244 	/* allocate and initialize data urbs */  in data_ep_set_params()
1348  * Determine the number of URBs to be used on this endpoint.
1400 	usb_audio_dbg(chip, "Set up %d URBS, ret=%d\n", ep->nurbs, err);  in snd_usb_endpoint_set_params()
1553  * In case it is not already running, the URBs for this endpoint will be
1592 	 * don't start the urbs here. Instead, mark them all as available,  in snd_usb_endpoint_start()
1593 	 * wait for the record urbs to return and queue the playback urbs  in snd_usb_endpoint_start()
1648 	usb_audio_dbg(ep->chip, "%d URBs submitted for EP 0x%x\n",  in snd_usb_endpoint_start()
1652 	/* put the remaining URBs to ready list */  in snd_usb_endpoint_start()
1669  * @keep_pending: keep in-flight URBs
1672  * In case the last user has requested the endpoint stop, the URBs will
1714  * down all the streaming URBs immediately.
1766 	 * and add it to the list of pending urbs. queue_pending_output_urbs()  in snd_usb_handle_sync_urb()