Aug 02 2009

m68k: Use DIV_ROUND_CLOSEST 

Author: Julia Lawall <julia@diku.dk>

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/)

// 
@haskernel@
@@

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

- (((x) + ((__divisor) / 2)) / (__divisor))
+ DIV_ROUND_CLOSEST(x,__divisor)
// 

Signed-off-by: Julia Lawall 
Signed-off-by: Geert Uytterhoeven 

---
 arch/m68k/amiga/config.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 
diff --git a/arch/m68k/amiga/config.c b/arch/m68k/amiga/config.c
index 6c74751..d2cc35d 100644
--- a/arch/m68k/amiga/config.c
+++ b/arch/m68k/amiga/config.c
@@ -480,7 +480,7 @@ static void __init amiga_sched_init(irq_handler_t timer_routine)
 	static struct resource sched_res = {
 		.name = "timer", .start = 0x00bfd400, .end = 0x00bfd5ff,
 	};
-	jiffy_ticks = (amiga_eclock+HZ/2)/HZ;
+	jiffy_ticks = DIV_ROUND_CLOSEST(amiga_eclock, HZ);
 
 	if (request_resource(&mb_resources._ciab, &sched_res))
 		printk("Cannot allocate ciab.ta{lo,hi}\n");

qlambert