staging: comedi: drivers: Use DIV_ROUND_CLOSEST

The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d
but is perhaps more readable.

The Coccinelle script used:
// <smpl>
@haskernel@
@@
@depends on haskernel@
expression x,__divisor;
@@
- (((x) + ((__divisor) / 2)) / (__divisor))
+ DIV_ROUND_CLOSEST(x,__divisor)
// </smpl>

Signed-off-by: Tapasweni Pathak <tapaswenipathak@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/s626.c b/drivers/staging/comedi/drivers/s626.c
index bc07450580574549f3b3413c7350b6f74a3e9f92..11a12d787e4cc41ecff0921dd371c00b2dca21f1 100644 (file)
--- a/drivers/staging/comedi/drivers/s626.c
+++ b/drivers/staging/comedi/drivers/s626.c
@@ -1970,7 +1970,7 @@ static int s626_ns_to_timer(unsigned int *nanosec, unsigned int flags)
        switch (flags & CMDF_ROUND_MASK) {
        case CMDF_ROUND_NEAREST:
        default:
-               divider = (*nanosec + base / 2) / base;
+               divider = DIV_ROUND_CLOSEST(*nanosec, base);
                break;
        case CMDF_ROUND_DOWN:
                divider = (*nanosec) / base;