watchdog: hpwdt (6/12): Introduce SECS_TO_TICKS() macro

Define a macro to convert from seconds to timer ticks.
Signed-off-by: Ndann frazier <dannf@hp.com>
Acked-by: NThomas Mingarelli <Thomas.Mingarelli@hp.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

drivers/watchdog/hpwdt.c

@@ -35,6 +35,7 @@
 #include <asm/cacheflush.h>
 
 #define HPWDT_VERSION			"1.1.1"
+#define SECS_TO_TICKS(secs)		((secs) * 1000 / 128)
 #define DEFAULT_MARGIN			30
 
 static unsigned int soft_margin = DEFAULT_MARGIN;	/* in seconds */
@@ -410,7 +411,7 @@ static int __devinit detect_cru_service(void)
  */
 static void hpwdt_start(void)
 {
-	reload = (soft_margin * 1000) / 128;
+	reload = SECS_TO_TICKS(soft_margin);
 	iowrite16(reload, hpwdt_timer_reg);
 	iowrite16(0x85, hpwdt_timer_con);
 }
@@ -443,7 +444,7 @@ static int hpwdt_change_timer(int new_margin)
 	printk(KERN_DEBUG
 		"hpwdt: New timer passed in is %d seconds.\n",
 		new_margin);
-	reload = (soft_margin * 1000) / 128;
+	reload = SECS_TO_TICKS(soft_margin);
 
 	return 0;
 }