staging: comedi: ni_labpc_common: use DIV_ROUND_CLOSEST to round divisor values

Use the DIV_ROUND_CLOSEST macro to clarify the (((x) + ((divisor) / 2)) / (divisor))
calculations.

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/ni_labpc_common.c b/drivers/staging/comedi/drivers/ni_labpc_common.c
index c494c53..77a7856 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_labpc_common.c
+++ b/drivers/staging/comedi/drivers/ni_labpc_common.c
@@ -400,10 +400,10 @@ static void labpc_adc_timing(struct comedi_device *dev, struct comedi_cmd *cmd,
                switch (cmd->flags & CMDF_ROUND_MASK) {
                default:
                case CMDF_ROUND_NEAREST:
-                       devpriv->divisor_a0 =
-                           (convert_period + (base_period / 2)) / base_period;
-                       devpriv->divisor_b1 =
-                           (scan_period + (base_period / 2)) / base_period;
+                       devpriv->divisor_a0 = DIV_ROUND_CLOSEST(convert_period,
+                                                               base_period);
+                       devpriv->divisor_b1 = DIV_ROUND_CLOSEST(scan_period,
+                                                               base_period);
                        break;
                case CMDF_ROUND_UP:
                        devpriv->divisor_a0 = DIV_ROUND_UP(convert_period,