Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

[powerpc.git] / kernel / time / ntp.c

diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index 3afeaa3..eb12509 100644 (file)
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -24,7 +24,7 @@ static u64 tick_length, tick_length_base;
 
 #define MAX_TICKADJ            500             /* microsecs */
 #define MAX_TICKADJ_SCALED     (((u64)(MAX_TICKADJ * NSEC_PER_USEC) << \
-                                 TICK_LENGTH_SHIFT) / HZ)
+                                 TICK_LENGTH_SHIFT) / NTP_INTERVAL_FREQ)
 
 /*
  * phase-lock loop variables
@@ -46,13 +46,17 @@ long time_adjust;
 
 static void ntp_update_frequency(void)
 {
-       tick_length_base = (u64)(tick_usec * NSEC_PER_USEC * USER_HZ) << TICK_LENGTH_SHIFT;
-       tick_length_base += (s64)CLOCK_TICK_ADJUST << TICK_LENGTH_SHIFT;
-       tick_length_base += (s64)time_freq << (TICK_LENGTH_SHIFT - SHIFT_NSEC);
+       u64 second_length = (u64)(tick_usec * NSEC_PER_USEC * USER_HZ)
+                               << TICK_LENGTH_SHIFT;
+       second_length += (s64)CLOCK_TICK_ADJUST << TICK_LENGTH_SHIFT;
+       second_length += (s64)time_freq << (TICK_LENGTH_SHIFT - SHIFT_NSEC);
 
-       do_div(tick_length_base, HZ);
+       tick_length_base = second_length;
 
-       tick_nsec = tick_length_base >> TICK_LENGTH_SHIFT;
+       do_div(second_length, HZ);
+       tick_nsec = second_length >> TICK_LENGTH_SHIFT;
+
+       do_div(tick_length_base, NTP_INTERVAL_FREQ);
 }
 
 /**
@@ -162,7 +166,7 @@ void second_overflow(void)
                        tick_length -= MAX_TICKADJ_SCALED;
                } else {
                        tick_length += (s64)(time_adjust * NSEC_PER_USEC /
-                                            HZ) << TICK_LENGTH_SHIFT;
+                                       NTP_INTERVAL_FREQ) << TICK_LENGTH_SHIFT;
                        time_adjust = 0;
                }
        }
@@ -239,7 +243,8 @@ int do_adjtimex(struct timex *txc)
                    result = -EINVAL;
                    goto leave;
                }
-               time_freq = ((s64)txc->freq * NSEC_PER_USEC) >> (SHIFT_USEC - SHIFT_NSEC);
+               time_freq = ((s64)txc->freq * NSEC_PER_USEC)
+                               >> (SHIFT_USEC - SHIFT_NSEC);
            }
 
            if (txc->modes & ADJ_MAXERROR) {
@@ -309,7 +314,8 @@ int do_adjtimex(struct timex *txc)
                    freq_adj += time_freq;
                    freq_adj = min(freq_adj, (s64)MAXFREQ_NSEC);
                    time_freq = max(freq_adj, (s64)-MAXFREQ_NSEC);
-                   time_offset = (time_offset / HZ) << SHIFT_UPDATE;
+                   time_offset = (time_offset / NTP_INTERVAL_FREQ)
+                                       << SHIFT_UPDATE;
                } /* STA_PLL */
            } /* txc->modes & ADJ_OFFSET */
            if (txc->modes & ADJ_TICK)
@@ -324,8 +330,10 @@ leave:     if ((time_status & (STA_UNSYNC|STA_CLOCKERR)) != 0)
        if ((txc->modes & ADJ_OFFSET_SINGLESHOT) == ADJ_OFFSET_SINGLESHOT)
            txc->offset    = save_adjust;
        else
-           txc->offset    = shift_right(time_offset, SHIFT_UPDATE) * HZ / 1000;
-       txc->freq          = (time_freq / NSEC_PER_USEC) << (SHIFT_USEC - SHIFT_NSEC);
+           txc->offset    = shift_right(time_offset, SHIFT_UPDATE)
+                               * NTP_INTERVAL_FREQ / 1000;
+       txc->freq          = (time_freq / NSEC_PER_USEC)
+                               << (SHIFT_USEC - SHIFT_NSEC);
        txc->maxerror      = time_maxerror;
        txc->esterror      = time_esterror;
        txc->status        = time_status;