diff --git a/drivers/staging/comedi/drivers/dt282x.c b/drivers/staging/comedi/drivers/dt282x.c
index d2a519d7be43..3071f11ba4f9 100644
--- a/drivers/staging/comedi/drivers/dt282x.c
+++ b/drivers/staging/comedi/drivers/dt282x.c
@@ -471,11 +471,6 @@ static void dt282x_ao_dma_interrupt(struct comedi_device *dev)
 
 	outw(devpriv->supcsr | DT2821_CLRDMADNE, dev->iobase + DT2821_SUPCSR);
 
-	if (!s->async->prealloc_buf) {
-		dev_err(dev->class_dev, "no buffer in %s\n", __func__);
-		return;
-	}
-
 	i = devpriv->current_dma_index;
 	ptr = devpriv->dma[i].buf;
 
@@ -504,11 +499,6 @@ static void dt282x_ai_dma_interrupt(struct comedi_device *dev)
 
 	outw(devpriv->supcsr | DT2821_CLRDMADNE, dev->iobase + DT2821_SUPCSR);
 
-	if (!s->async->prealloc_buf) {
-		dev_err(dev->class_dev, "no buffer in %s\n", __func__);
-		return;
-	}
-
 	i = devpriv->current_dma_index;
 	ptr = devpriv->dma[i].buf;
 	size = devpriv->dma[i].size;