From: Julia Lawall <julia@diku.dk>
Date: Sun, 2 Aug 2009 08:46:45 +0000 (+0200)
Subject: arch/arm/plat-iop: Use DIV_ROUND_CLOSEST
X-Git-Tag: upstream/snapshot3+hdmi~16910^2~5^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a692838dcaacb5f6f05fac73abb99d92dd7b1021;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

arch/arm/plat-iop: Use DIV_ROUND_CLOSEST

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

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@haskernel@
@@

#include <linux/kernel.h>

@depends on haskernel@
expression x,__divisor;
@@

- (((x) + ((__divisor) / 2)) / (__divisor))
+ DIV_ROUND_CLOSEST(x,__divisor)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---

diff --git a/arch/arm/plat-iop/time.c b/arch/arm/plat-iop/time.c
index 3695bbe..8da95d5 100644
--- a/arch/arm/plat-iop/time.c
+++ b/arch/arm/plat-iop/time.c
@@ -85,7 +85,7 @@ void __init iop_init_time(unsigned long tick_rate)
 {
 	u32 timer_ctl;
 
-	ticks_per_jiffy = (tick_rate + HZ/2) / HZ;
+	ticks_per_jiffy = DIV_ROUND_CLOSEST(tick_rate, HZ);
 	ticks_per_usec = tick_rate / 1000000;
 	next_jiffy_time = 0xffffffff;
 	iop_tick_rate = tick_rate;