- if (!peasycap->audio_isoc_streaming) {
- JOM(4, "initial submission of all audio urbs\n");
- rc = usb_set_interface(peasycap->pusb_device,
- peasycap->audio_interface,
- peasycap->audio_altsetting_on);
- JOM(8, "usb_set_interface(.,%i,%i) returned %i\n",
- peasycap->audio_interface,
- peasycap->audio_altsetting_on, rc);
-
- isbad = 0;
- nospc = 0;
- m = 0;
- list_for_each(plist_head, (peasycap->purb_audio_head)) {
- pdata_urb = list_entry(plist_head, struct data_urb, list_head);
- if (pdata_urb) {
- purb = pdata_urb->purb;
- if (purb) {
- isbuf = pdata_urb->isbuf;
-
- purb->interval = 1;
- purb->dev = peasycap->pusb_device;
- purb->pipe = usb_rcvisocpipe(peasycap->pusb_device,
- peasycap->audio_endpointnumber);
- purb->transfer_flags = URB_ISO_ASAP;
- purb->transfer_buffer = peasycap->audio_isoc_buffer[isbuf].pgo;
- purb->transfer_buffer_length = peasycap->audio_isoc_buffer_size;
+
+ if (peasycap->audio_isoc_streaming) {
+ JOM(4, "already streaming audio urbs\n");
+ return 0;
+ }
+
+ JOM(4, "initial submission of all audio urbs\n");
+ rc = usb_set_interface(peasycap->pusb_device,
+ peasycap->audio_interface,
+ peasycap->audio_altsetting_on);
+ JOM(8, "usb_set_interface(.,%i,%i) returned %i\n",
+ peasycap->audio_interface,
+ peasycap->audio_altsetting_on, rc);
+
+ isbad = 0;
+ nospc = 0;
+ m = 0;
+ list_for_each(plist_head, peasycap->purb_audio_head) {
+ pdata_urb = list_entry(plist_head, struct data_urb, list_head);
+ if (pdata_urb && pdata_urb->purb) {
+ purb = pdata_urb->purb;
+ isbuf = pdata_urb->isbuf;
+
+ purb->interval = 1;
+ purb->dev = peasycap->pusb_device;
+ purb->pipe = usb_rcvisocpipe(peasycap->pusb_device,
+ peasycap->audio_endpointnumber);
+ purb->transfer_flags = URB_ISO_ASAP;
+ purb->transfer_buffer = peasycap->audio_isoc_buffer[isbuf].pgo;
+ purb->transfer_buffer_length = peasycap->audio_isoc_buffer_size;