staging: comedi: pcl818: use cfc_bytes_per_scan()

Use the comedi_fc helper to get the number of bytes per scan.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/pcl818.c b/drivers/staging/comedi/drivers/pcl818.c
index 48b81c3..7d00ae6 100644 (file)
--- 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--;