int index, rc;
 
        LCS_DBF_TEXT(5, trace, "rdybuff");
-       if (buffer->state != BUF_STATE_LOCKED &&
-           buffer->state != BUF_STATE_PROCESSED)
-               BUG();
+       BUG_ON(buffer->state != BUF_STATE_LOCKED &&
+               buffer->state != BUF_STATE_PROCESSED);
        spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
        buffer->state = BUF_STATE_READY;
        index = buffer - channel->iob;
        int index, prev, next;
 
        LCS_DBF_TEXT(5, trace, "prcsbuff");
-       if (buffer->state != BUF_STATE_READY)
-               BUG();
+       BUG_ON(buffer->state != BUF_STATE_READY);
        buffer->state = BUF_STATE_PROCESSED;
        index = buffer - channel->iob;
        prev = (index - 1) & (LCS_NUM_BUFFS - 1);
        unsigned long flags;
 
        LCS_DBF_TEXT(5, trace, "relbuff");
-       if (buffer->state != BUF_STATE_LOCKED &&
-           buffer->state != BUF_STATE_PROCESSED)
-               BUG();
+       BUG_ON(buffer->state != BUF_STATE_LOCKED &&
+               buffer->state != BUF_STATE_PROCESSED);
        spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
        buffer->state = BUF_STATE_EMPTY;
        spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);