1 files changed, 9 insertions, 6 deletions

diff --git a/arch/arm/mach-rpc/time.c b/arch/arm/mach-rpc/time.c
index 9a6def14df01..99363ae5cac7 100644
--- a/arch/arm/mach-rpc/time.c
+++ b/arch/arm/mach-rpc/time.c
@@ -24,6 +24,9 @@
 
 #include <asm/mach/time.h>
 
+#define RPC_CLOCK_FREQ 2000000
+#define RPC_LATCH DIV_ROUND_CLOSEST(RPC_CLOCK_FREQ, HZ)
+
 static u32 ioc_timer_gettimeoffset(void)
 {
         unsigned int count1, count2, status;
@@ -46,23 +49,23 @@ static u32 ioc_timer_gettimeoffset(void)
                  * and count2.
                  */
                 if (status & (1 << 5))
-                        offset -= LATCH;
+                        offset -= RPC_LATCH;
         } else if (count2 > count1) {
                 /*
                  * We have just had another interrupt between reading
                  * count1 and count2.
                  */
-                offset -= LATCH;
+                offset -= RPC_LATCH;
         }
 
-        offset = (LATCH - offset) * (tick_nsec / 1000);
-        return ((offset + LATCH/2) / LATCH) * 1000;
+        offset = (RPC_LATCH - offset) * (tick_nsec / 1000);
+        return DIV_ROUND_CLOSEST(offset, RPC_LATCH) * 1000;
 }
 
 void __init ioctime_init(void)
 {
-        ioc_writeb(LATCH & 255, IOC_T0LTCHL);
-        ioc_writeb(LATCH >> 8, IOC_T0LTCHH);
+        ioc_writeb(RPC_LATCH & 255, IOC_T0LTCHL);
+        ioc_writeb(RPC_LATCH >> 8, IOC_T0LTCHH);
         ioc_writeb(0, IOC_T0GO);
 }