103 	struct snd_usx2y_hwdep_pcm_shm *shm = usx2y->hwdep_pcm_shm;  in usx2y_hwdep_urb_play_prepare()  local
106 	if (0 > shm->playback_iso_start) {  in usx2y_hwdep_urb_play_prepare()
107 		shm->playback_iso_start = shm->captured_iso_head -  in usx2y_hwdep_urb_play_prepare()
109 		if (0 > shm->playback_iso_start)  in usx2y_hwdep_urb_play_prepare()
110 			shm->playback_iso_start += ARRAY_SIZE(shm->captured_iso);  in usx2y_hwdep_urb_play_prepare()
111 		shm->playback_iso_head = shm->playback_iso_start;  in usx2y_hwdep_urb_play_prepare()
117 		counts = shm->captured_iso[shm->playback_iso_head].length / usx2y->stride;  in usx2y_hwdep_urb_play_prepare()
123 		urb->iso_frame_desc[pack].offset = shm->captured_iso[shm->playback_iso_head].offset;  in usx2y_hwdep_urb_play_prepare()
124 		urb->iso_frame_desc[pack].length = shm->captured_iso[shm->playback_iso_head].length;  in usx2y_hwdep_urb_play_prepare()
128 		if (++shm->playback_iso_head >= ARRAY_SIZE(shm->captured_iso))  in usx2y_hwdep_urb_play_prepare()
129 			shm->playback_iso_head = 0;  in usx2y_hwdep_urb_play_prepare()
144 			struct snd_usx2y_hwdep_pcm_shm *shm = subs->usx2y->hwdep_pcm_shm;  in usx2y_usbpcm_urb_capt_iso_advance()  local
145 			int head = shm->captured_iso_head + 1;  in usx2y_usbpcm_urb_capt_iso_advance()
146 			if (head >= ARRAY_SIZE(shm->captured_iso))  in usx2y_usbpcm_urb_capt_iso_advance()
148 			shm->captured_iso[head].frame = urb->start_frame + pack;  in usx2y_usbpcm_urb_capt_iso_advance()
149 			shm->captured_iso[head].offset = desc->offset;  in usx2y_usbpcm_urb_capt_iso_advance()
150 			shm->captured_iso[head].length = desc->actual_length;  in usx2y_usbpcm_urb_capt_iso_advance()
151 			shm->captured_iso_head = head;  in usx2y_usbpcm_urb_capt_iso_advance()
152 			shm->captured_iso_frames++;  in usx2y_usbpcm_urb_capt_iso_advance()