diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index e2c8ec9..fad016a 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -379,7 +379,10 @@
 static void mv_xor_tasklet(unsigned long data)
 {
 	struct mv_xor_chan *chan = (struct mv_xor_chan *) data;
-	mv_xor_slot_cleanup(chan);
+
+	spin_lock_bh(&chan->lock);
+	__mv_xor_slot_cleanup(chan);
+	spin_unlock_bh(&chan->lock);
 }
 
 static struct mv_xor_desc_slot *
@@ -658,9 +661,10 @@
 	struct mv_xor_desc_slot *iter, *_iter;
 	int in_use_descs = 0;
 
-	mv_xor_slot_cleanup(mv_chan);
-
 	spin_lock_bh(&mv_chan->lock);
+
+	__mv_xor_slot_cleanup(mv_chan);
+
 	list_for_each_entry_safe(iter, _iter, &mv_chan->chain,
 					chain_node) {
 		in_use_descs++;
@@ -704,7 +708,10 @@
 	ret = dma_cookie_status(chan, cookie, txstate);
 	if (ret == DMA_COMPLETE)
 		return ret;
-	mv_xor_slot_cleanup(mv_chan);
+
+	spin_lock_bh(&mv_chan->lock);
+	__mv_xor_slot_cleanup(mv_chan);
+	spin_unlock_bh(&mv_chan->lock);
 
 	return dma_cookie_status(chan, cookie, txstate);
 }