diff --git a/drivers/staging/comedi/drivers/pcl816.c b/drivers/staging/comedi/drivers/pcl816.c
index 65cbafb85698..a471c3df12b4 100644
--- a/drivers/staging/comedi/drivers/pcl816.c
+++ b/drivers/staging/comedi/drivers/pcl816.c
@@ -289,8 +289,6 @@ static bool pcl816_ai_next_chan(struct comedi_device *dev,
 	struct pcl816_private *devpriv = dev->private;
 	struct comedi_cmd *cmd = &s->async->cmd;
 
-	s->async->events |= COMEDI_CB_BLOCK;
-
 	s->async->cur_chan++;
 	if (s->async->cur_chan >= cmd->chanlist_len) {
 		s->async->cur_chan = 0;
@@ -313,10 +311,12 @@ static void transfer_from_dma_buf(struct comedi_device *dev,
 				  unsigned short *ptr,
 				  unsigned int bufptr, unsigned int len)
 {
+	unsigned short val;
 	int i;
 
 	for (i = 0; i < len; i++) {
-		comedi_buf_put(s, ptr[bufptr++]);
+		val = ptr[bufptr++];
+		comedi_buf_write_samples(s, &val, 1);
 
 		if (!pcl816_ai_next_chan(dev, s))
 			return;