As of Linux 2.6.9, timeout is no longer in the URB structure, see:
http://linux.bkbits.net:8080/linux-2.6/cset@1.1832.8.20

- Daniel Drake <dsd@gentoo.org>

--- unicorn/unicorn_usb/unicorn_usbdrv.c.orig	2004-12-14 23:03:58.498415040 +0000
+++ unicorn/unicorn_usb/unicorn_usbdrv.c	2004-12-14 23:04:49.927596616 +0000
@@ -119,8 +119,8 @@ static void dump_urb(struct urb *urb)
 
 	printk(KERN_DEBUG "hcpriv=%p,dev=%p,pipe=%x,status=%d,transfer_flags=%d\n",
 	       urb->hcpriv,urb->dev,urb->pipe,urb->status,urb->transfer_flags);
-	printk(KERN_DEBUG "bandwidth=%d,start_frame=%u,interval=%d,error_count=%d,timeout=%d\n",
-	    urb->bandwidth,urb->start_frame,urb->interval,urb->error_count,urb->timeout);
+	printk(KERN_DEBUG "bandwidth=%d,start_frame=%u,interval=%d,error_count=%d\n",
+	    urb->bandwidth,urb->start_frame,urb->interval,urb->error_count);
 	// buffers
 	printk(KERN_DEBUG "transfer_buffer=%p,transfer_buffer_length=%d,actual_length=%d\n",
 	       urb->transfer_buffer,urb->transfer_buffer_length,urb->actual_length);
@@ -149,7 +149,6 @@ static void fill_isoc_urb(struct urb *ur
 	urb->transfer_flags=USB_ISO_ASAP;
 	urb->start_frame = -1;
 	urb->interval = 1;
-	urb->timeout = 0;
 	urb->complete=complete;
 	urb->context=context;
 	{