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-rw-r--r--kernel/time.c25
1 files changed, 6 insertions, 19 deletions
diff --git a/kernel/time.c b/kernel/time.c
index a3c2100470e1..245d595a13cb 100644
--- a/kernel/time.c
+++ b/kernel/time.c
@@ -338,30 +338,20 @@ int do_adjtimex(struct timex *txc)
if (mtemp >= MINSEC) {
ltemp = (time_offset / mtemp) << (SHIFT_USEC -
SHIFT_UPDATE);
- if (ltemp < 0)
- time_freq -= -ltemp >> SHIFT_KH;
- else
- time_freq += ltemp >> SHIFT_KH;
+ time_freq += shift_right(ltemp, SHIFT_KH);
} else /* calibration interval too short (p. 12) */
result = TIME_ERROR;
} else { /* PLL mode */
if (mtemp < MAXSEC) {
ltemp *= mtemp;
- if (ltemp < 0)
- time_freq -= -ltemp >> (time_constant +
- time_constant +
- SHIFT_KF - SHIFT_USEC);
- else
- time_freq += ltemp >> (time_constant +
+ time_freq += shift_right(ltemp,(time_constant +
time_constant +
- SHIFT_KF - SHIFT_USEC);
+ SHIFT_KF - SHIFT_USEC));
} else /* calibration interval too long (p. 12) */
result = TIME_ERROR;
}
- if (time_freq > time_tolerance)
- time_freq = time_tolerance;
- else if (time_freq < -time_tolerance)
- time_freq = -time_tolerance;
+ time_freq = min(time_freq, time_tolerance);
+ time_freq = max(time_freq, -time_tolerance);
} /* STA_PLL || STA_PPSTIME */
} /* txc->modes & ADJ_OFFSET */
if (txc->modes & ADJ_TICK) {
@@ -384,10 +374,7 @@ leave: if ((time_status & (STA_UNSYNC|STA_CLOCKERR)) != 0
if ((txc->modes & ADJ_OFFSET_SINGLESHOT) == ADJ_OFFSET_SINGLESHOT)
txc->offset = save_adjust;
else {
- if (time_offset < 0)
- txc->offset = -(-time_offset >> SHIFT_UPDATE);
- else
- txc->offset = time_offset >> SHIFT_UPDATE;
+ txc->offset = shift_right(time_offset, SHIFT_UPDATE);
}
txc->freq = time_freq + pps_freq;
txc->maxerror = time_maxerror;