[PATCH] [PATCH 2.5.33+] ohci and iso-in

I added a bug in 2.5.23 when cleaning up something that
was broken ... it wasn't broken in quite the way I had
thought at the time!

This fixes a problem some folk have reported recently
with ISO-IN, by masking a common non-error outcome.

Please merge to Linus' tree, on top of the one patch
you already have queued.  Thanks to Nemosoft for such
quick turnaround on testing!

drivers/usb/host/ohci-q.c

@@ -727,8 +727,12 @@ static void td_done (struct urb *urb, struct td *td)
 
 		if (usb_pipeout (urb->pipe))
 			dlen = urb->iso_frame_desc [td->index].length;
-		else
+		else {
+			/* short reads are always OK for ISO */
+			if (cc == TD_DATAUNDERRUN)
+				cc = TD_CC_NOERROR;
 			dlen = tdPSW & 0x3ff;
+		}
 		urb->actual_length += dlen;
 		urb->iso_frame_desc [td->index].actual_length = dlen;
 		urb->iso_frame_desc [td->index].status = cc_to_error [cc];