+ usX2Y->wait_iso_frame = -1;
+ start:
+ {
+ usX2Y_subs_startup(subs);
+ for (i = 0; i < NRURBS; i++) {
+ struct urb *urb = subs->urb[i];
+ if (usb_pipein(urb->pipe)) {
+ unsigned long pack;
+ if (0 == i)
+ atomic_set(&subs->state, state_STARTING3);
+ urb->dev = usX2Y->chip.dev;
+ urb->transfer_flags = URB_ISO_ASAP;
+ for (pack = 0; pack < nr_of_packs(); pack++) {
+ urb->iso_frame_desc[pack].offset = subs->maxpacksize * pack;
+ urb->iso_frame_desc[pack].length = subs->maxpacksize;
+ }
+ urb->transfer_buffer_length = subs->maxpacksize * nr_of_packs();
+ if ((err = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
+ snd_printk (KERN_ERR "cannot submit datapipe for urb %d, err = %d\n", i, err);
+ err = -EPIPE;
+ goto cleanup;
+ } else {
+ if (0 > usX2Y->wait_iso_frame)
+ usX2Y->wait_iso_frame = urb->start_frame;
+ }
+ urb->transfer_flags = 0;
+ } else {
+ atomic_set(&subs->state, state_STARTING1);
+ break;
+ }
+ }
+ err = 0;
+ wait_event(usX2Y->prepare_wait_queue, NULL == usX2Y->prepare_subs);
+ if (atomic_read(&subs->state) != state_PREPARED) {
+ err = -EPIPE;
+ }
+
+ cleanup:
+ if (err) {
+ usX2Y_subs_startup_finish(usX2Y);
+ usX2Y_clients_stop(usX2Y); // something is completely wroong > stop evrything
+ }
+ }
+ return err;
+}
+
+/*
+ * return the current pcm pointer. just return the hwptr_done value.
+ */
+static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(snd_pcm_substream_t *substream)
+{
+ snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)substream->runtime->private_data;
+ return subs->hwptr_done;