[MIPS] Use USECS_PER_SEC / HZ instead of tick_usec in do_gettimeofday.

    
The 'tick_usec' is USER_HZ period in usec.  do_gettimeofday() should
use kernel HZ value.
    
Here is a patch for MIPS.  It seems m32r, m68k and sparc have same
problem though their HZ and USER_HZ are same for now.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index 7050b4ffffcd..42c94c771afb 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -163,7 +163,7 @@ void do_gettimeofday(struct timeval *tv)
         unsigned long seq;
         unsigned long lost;
         unsigned long usec, sec;
-        unsigned long max_ntp_tick = tick_usec - tickadj;
+        unsigned long max_ntp_tick;
 
         do {
                 seq = read_seqbegin(&xtime_lock);
@@ -178,12 +178,13 @@ void do_gettimeofday(struct timeval *tv)
                  * Better to lose some accuracy than have time go backwards..
                  */
                 if (unlikely(time_adjust < 0)) {
+                        max_ntp_tick = (USEC_PER_SEC / HZ) - tickadj;
                         usec = min(usec, max_ntp_tick);
 
                         if (lost)
                                 usec += lost * max_ntp_tick;
                 } else if (unlikely(lost))
-                        usec += lost * tick_usec;
+                        usec += lost * (USEC_PER_SEC / HZ);
 
                 sec = xtime.tv_sec;
                 usec += (xtime.tv_nsec / 1000);