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-rw-r--r--drivers/staging/comedi/drivers/pcl818.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/comedi/drivers/pcl818.c b/drivers/staging/comedi/drivers/pcl818.c
index 48b81c39c6a8..7d00ae639d38 100644
--- a/drivers/staging/comedi/drivers/pcl818.c
+++ b/drivers/staging/comedi/drivers/pcl818.c
@@ -353,7 +353,7 @@ static void pcl818_ai_setup_dma(struct comedi_device *dev,
disable_dma(devpriv->dma); /* disable dma */
bytes = devpriv->hwdmasize;
if (cmd->stop_src == TRIG_COUNT) {
- bytes = cmd->chanlist_len * cmd->stop_arg * sizeof(short);
+ bytes = cmd->stop_arg * cfc_bytes_per_scan(s);
devpriv->dma_runs_to_end = bytes / devpriv->hwdmasize;
devpriv->last_dma_run = bytes % devpriv->hwdmasize;
devpriv->dma_runs_to_end--;