sparc64: wait_event_interruptible_timeout may return -ERESTARTSYS

wait_event_interruptible_timeout may return -ERESTARTSYS.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/sbus/char/bbc_i2c.c

@@ -129,7 +129,7 @@ static int wait_for_pin(struct bbc_i2c_bus *bp, u8 *status)
 	bp->waiting = 1;
 	add_wait_queue(&bp->wq, &wait);
 	while (limit-- > 0) {
-		unsigned long val;
+		long val;
 
 		val = wait_event_interruptible_timeout(
 				bp->wq,