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Diffstat (limited to 'kernel')
-rw-r--r--kernel/time.c59
-rw-r--r--kernel/timer.c13
2 files changed, 18 insertions, 54 deletions
diff --git a/kernel/time.c b/kernel/time.c
index 804539165d8..e00a97b7724 100644
--- a/kernel/time.c
+++ b/kernel/time.c
@@ -202,24 +202,6 @@ asmlinkage long sys_settimeofday(struct timeval __user *tv,
return do_sys_settimeofday(tv ? &new_ts : NULL, tz ? &new_tz : NULL);
}
-long pps_offset; /* pps time offset (us) */
-long pps_jitter = MAXTIME; /* time dispersion (jitter) (us) */
-
-long pps_freq; /* frequency offset (scaled ppm) */
-long pps_stabil = MAXFREQ; /* frequency dispersion (scaled ppm) */
-
-long pps_valid = PPS_VALID; /* pps signal watchdog counter */
-
-int pps_shift = PPS_SHIFT; /* interval duration (s) (shift) */
-
-long pps_jitcnt; /* jitter limit exceeded */
-long pps_calcnt; /* calibration intervals */
-long pps_errcnt; /* calibration errors */
-long pps_stbcnt; /* stability limit exceeded */
-
-/* hook for a loadable hardpps kernel module */
-void (*hardpps_ptr)(struct timeval *);
-
/* we call this to notify the arch when the clock is being
* controlled. If no such arch routine, do nothing.
*/
@@ -279,7 +261,7 @@ int do_adjtimex(struct timex *txc)
result = -EINVAL;
goto leave;
}
- time_freq = txc->freq - pps_freq;
+ time_freq = txc->freq;
}
if (txc->modes & ADJ_MAXERROR) {
@@ -312,10 +294,8 @@ int do_adjtimex(struct timex *txc)
if ((time_next_adjust = txc->offset) == 0)
time_adjust = 0;
}
- else if ( time_status & (STA_PLL | STA_PPSTIME) ) {
- ltemp = (time_status & (STA_PPSTIME | STA_PPSSIGNAL)) ==
- (STA_PPSTIME | STA_PPSSIGNAL) ?
- pps_offset : txc->offset;
+ else if (time_status & STA_PLL) {
+ ltemp = txc->offset;
/*
* Scale the phase adjustment and
@@ -356,23 +336,14 @@ int do_adjtimex(struct timex *txc)
}
time_freq = min(time_freq, time_tolerance);
time_freq = max(time_freq, -time_tolerance);
- } /* STA_PLL || STA_PPSTIME */
+ } /* STA_PLL */
} /* txc->modes & ADJ_OFFSET */
if (txc->modes & ADJ_TICK) {
tick_usec = txc->tick;
tick_nsec = TICK_USEC_TO_NSEC(tick_usec);
}
} /* txc->modes */
-leave: if ((time_status & (STA_UNSYNC|STA_CLOCKERR)) != 0
- || ((time_status & (STA_PPSFREQ|STA_PPSTIME)) != 0
- && (time_status & STA_PPSSIGNAL) == 0)
- /* p. 24, (b) */
- || ((time_status & (STA_PPSTIME|STA_PPSJITTER))
- == (STA_PPSTIME|STA_PPSJITTER))
- /* p. 24, (c) */
- || ((time_status & STA_PPSFREQ) != 0
- && (time_status & (STA_PPSWANDER|STA_PPSERROR)) != 0))
- /* p. 24, (d) */
+leave: if ((time_status & (STA_UNSYNC|STA_CLOCKERR)) != 0)
result = TIME_ERROR;
if ((txc->modes & ADJ_OFFSET_SINGLESHOT) == ADJ_OFFSET_SINGLESHOT)
@@ -380,7 +351,7 @@ leave: if ((time_status & (STA_UNSYNC|STA_CLOCKERR)) != 0
else {
txc->offset = shift_right(time_offset, SHIFT_UPDATE);
}
- txc->freq = time_freq + pps_freq;
+ txc->freq = time_freq;
txc->maxerror = time_maxerror;
txc->esterror = time_esterror;
txc->status = time_status;
@@ -388,14 +359,16 @@ leave: if ((time_status & (STA_UNSYNC|STA_CLOCKERR)) != 0
txc->precision = time_precision;
txc->tolerance = time_tolerance;
txc->tick = tick_usec;
- txc->ppsfreq = pps_freq;
- txc->jitter = pps_jitter >> PPS_AVG;
- txc->shift = pps_shift;
- txc->stabil = pps_stabil;
- txc->jitcnt = pps_jitcnt;
- txc->calcnt = pps_calcnt;
- txc->errcnt = pps_errcnt;
- txc->stbcnt = pps_stbcnt;
+
+ /* PPS is not implemented, so these are zero */
+ txc->ppsfreq = 0;
+ txc->jitter = 0;
+ txc->shift = 0;
+ txc->stabil = 0;
+ txc->jitcnt = 0;
+ txc->calcnt = 0;
+ txc->errcnt = 0;
+ txc->stbcnt = 0;
write_sequnlock_irq(&xtime_lock);
do_gettimeofday(&txc->time);
notify_arch_cmos_timer();
diff --git a/kernel/timer.c b/kernel/timer.c
index 13fa72cac7d..ab189dd187c 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -697,18 +697,9 @@ static void second_overflow(void)
/*
* Compute the frequency estimate and additional phase adjustment due
- * to frequency error for the next second. When the PPS signal is
- * engaged, gnaw on the watchdog counter and update the frequency
- * computed by the pll and the PPS signal.
+ * to frequency error for the next second.
*/
- pps_valid++;
- if (pps_valid == PPS_VALID) { /* PPS signal lost */
- pps_jitter = MAXTIME;
- pps_stabil = MAXFREQ;
- time_status &= ~(STA_PPSSIGNAL | STA_PPSJITTER |
- STA_PPSWANDER | STA_PPSERROR);
- }
- ltemp = time_freq + pps_freq;
+ ltemp = time_freq;
time_adj += shift_right(ltemp,(SHIFT_USEC + SHIFT_HZ - SHIFT_SCALE));
#if HZ == 100