From: S.Caglar Onur <caglar@pardus.org.tr>

The functions time_before, time_before_eq, time_after, and time_after_eq are
more robust for comparing jiffies against other values.

So implement usage of the time_after() macro, defined in linux/jiffies.h,
which deals with wrapping correctly

Signed-off-by: S.Caglar Onur <caglar@pardus.org.tr>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/alpha/kernel/traps.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff -puN arch/alpha/kernel/traps.c~arch-alpha-kernel-trapsc-use-time_-macros arch/alpha/kernel/traps.c
--- a/arch/alpha/kernel/traps.c~arch-alpha-kernel-trapsc-use-time_-macros
+++ a/arch/alpha/kernel/traps.c
@@ -8,6 +8,7 @@
  * This file initializes the trap entry points
  */
 
+#include <linux/jiffies.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/tty.h>
@@ -781,7 +782,7 @@ do_entUnaUser(void __user * va, unsigned
 	   with the unaliged access.  */
 
 	if (!test_thread_flag (TIF_UAC_NOPRINT)) {
-		if (cnt >= 5 && jiffies - last_time > 5*HZ) {
+		if (cnt >= 5 && time_after(jiffies, last_time + 5 * HZ)) {
 			cnt = 0;
 		}
 		if (++cnt < 5) {
_