[PATCH] uhci.c 2.4.19-pre3 interrupt deadlock

Unfortunately, I left out one line from my spinlock cleanup patch
recently.

As a result, using interrupt URB's could cause a deadlock on SMP
kernels.

This should fix the deadlock Greg reported.

JE

drivers/usb/uhci.c

@@ -1662,6 +1662,7 @@ static void uhci_transfer_result(struct uhci *uhci, struct urb *urb)
 		/* Interrupts are an exception */
 		if (urb->interval) {
 			uhci_add_complete(urb);
+			spin_unlock_irqrestore(&urb->lock, flags);
 			return;		/* <-- note return */
 		}