diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 31e9c49..c4d6152 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2287,6 +2287,7 @@
 		goto out;
 
 	spin_lock_irqsave(&pch->lock, flags);
+	spin_lock(&pch->thread->dmac->lock);
 
 	if (pch->thread->req_running != -1)
 		running = pch->thread->req[pch->thread->req_running].desc;
@@ -2329,6 +2330,7 @@
 		if (desc->last)
 			residual = 0;
 	}
+	spin_unlock(&pch->thread->dmac->lock);
 	spin_unlock_irqrestore(&pch->lock, flags);
 
 out: