arch/alpha/kernel/traps.c: use time_* macros

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

[akpm@linux-foundation.org: fix warning]
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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/alpha/kernel/traps.c b/arch/alpha/kernel/traps.c
index 2dc7f9fed213704749e0e2b7d58e161b909fad7e..dc57790250d2a26484bd25e2be0dca496e3217e8 100644 (file)
--- a/arch/alpha/kernel/traps.c
+++ b/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>
@@ -770,7 +771,7 @@ do_entUnaUser(void __user * va, unsigned long opcode,
              unsigned long reg, struct pt_regs *regs)
 {
        static int cnt = 0;
-       static long last_time = 0;
+       static unsigned long last_time;
 
        unsigned long tmp1, tmp2, tmp3, tmp4;
        unsigned long fake_reg, *reg_addr = &fake_reg;
@@ -781,7 +782,7 @@ do_entUnaUser(void __user * va, unsigned long opcode,
           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) {