459 static void usbtv_iso_cb(struct urb *ip)  in usbtv_iso_cb()  argument
463 	struct usbtv *usbtv = (struct usbtv *)ip->context;  in usbtv_iso_cb()
465 	switch (ip->status) {  in usbtv_iso_cb()
481 	for (i = 0; i < ip->number_of_packets; i++) {  in usbtv_iso_cb()
482 		int size = ip->iso_frame_desc[i].actual_length;  in usbtv_iso_cb()
483 		unsigned char *data = ip->transfer_buffer +  in usbtv_iso_cb()
484 				ip->iso_frame_desc[i].offset;  in usbtv_iso_cb()
493 	ret = usb_submit_urb(ip, GFP_ATOMIC);  in usbtv_iso_cb()
500 	struct urb *ip;  in usbtv_setup_iso_transfer()  local
504 	ip = usb_alloc_urb(USBTV_ISOC_PACKETS, GFP_KERNEL);  in usbtv_setup_iso_transfer()
505 	if (ip == NULL)  in usbtv_setup_iso_transfer()
508 	ip->dev = usbtv->udev;  in usbtv_setup_iso_transfer()
509 	ip->context = usbtv;  in usbtv_setup_iso_transfer()
510 	ip->pipe = usb_rcvisocpipe(usbtv->udev, USBTV_VIDEO_ENDP);  in usbtv_setup_iso_transfer()
511 	ip->interval = 1;  in usbtv_setup_iso_transfer()
512 	ip->transfer_flags = URB_ISO_ASAP;  in usbtv_setup_iso_transfer()
513 	ip->transfer_buffer = kcalloc(USBTV_ISOC_PACKETS, size,  in usbtv_setup_iso_transfer()
515 	if (!ip->transfer_buffer) {  in usbtv_setup_iso_transfer()
516 		usb_free_urb(ip);  in usbtv_setup_iso_transfer()
519 	ip->complete = usbtv_iso_cb;  in usbtv_setup_iso_transfer()
520 	ip->number_of_packets = USBTV_ISOC_PACKETS;  in usbtv_setup_iso_transfer()
521 	ip->transfer_buffer_length = size * USBTV_ISOC_PACKETS;  in usbtv_setup_iso_transfer()
523 		ip->iso_frame_desc[i].offset = size * i;  in usbtv_setup_iso_transfer()
524 		ip->iso_frame_desc[i].length = size;  in usbtv_setup_iso_transfer()
527 	return ip;  in usbtv_setup_iso_transfer()
537 		struct urb *ip = usbtv->isoc_urbs[i];  in usbtv_stop()  local
539 		if (ip == NULL)  in usbtv_stop()
541 		usb_kill_urb(ip);  in usbtv_stop()
542 		kfree(ip->transfer_buffer);  in usbtv_stop()
543 		usb_free_urb(ip);  in usbtv_stop()
580 		struct urb *ip;  in usbtv_start()  local
582 		ip = usbtv_setup_iso_transfer(usbtv);  in usbtv_start()
583 		if (ip == NULL) {  in usbtv_start()
587 		usbtv->isoc_urbs[i] = ip;  in usbtv_start()
589 		ret = usb_submit_urb(ip, GFP_KERNEL);  in usbtv_start()