ARM: 5635/1: Use DIV_ROUND_CLOSEST
authorJulia Lawall <julia@diku.dk>
Mon, 3 Aug 2009 10:57:20 +0000 (11:57 +0100)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Mon, 3 Aug 2009 11:35:43 +0000 (12:35 +0100)
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@
@@

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

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

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arch/arm/mach-ep93xx/core.c

index 40755298fa330d03f8391944ae5d3b2777c5acb7..16b92c37ec99a7107ec29ef51103a67ba0c4c191 100644 (file)
@@ -82,7 +82,7 @@ void __init ep93xx_map_io(void)
  */
 static unsigned int last_jiffy_time;
 
-#define TIMER4_TICKS_PER_JIFFY         ((CLOCK_TICK_RATE + (HZ/2)) / HZ)
+#define TIMER4_TICKS_PER_JIFFY         DIV_ROUND_CLOSEST(CLOCK_TICK_RATE, HZ)
 
 static irqreturn_t ep93xx_timer_interrupt(int irq, void *dev_id)
 {