ntp: Remove redundant and incorrect parameter check

The ADJ_SETOFFSET code redundantly checks the range of the nanoseconds
field of the time value. This field is checked again in the subsequent
call to timekeeping_inject_offset(). Also, as is, the check will not
detect whether the number of microseconds is out of range.

Let timekeeping_inject_offset() do the error checking.
Signed-off-by: NRichard Cochran <richard.cochran@omicron.at>
Cc: johnstul@us.ibm.com
LKML-Reference: <20110218090724.GA2924@riccoc20.at.omicron.at>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

kernel/time/ntp.c

@@ -650,13 +650,13 @@ int do_adjtimex(struct timex *txc)
 
 	if (txc->modes & ADJ_SETOFFSET) {
 		struct timespec delta;
-		if ((unsigned long)txc->time.tv_usec >= NSEC_PER_SEC)
-			return -EINVAL;
 		delta.tv_sec  = txc->time.tv_sec;
 		delta.tv_nsec = txc->time.tv_usec;
 		if (!(txc->modes & ADJ_NANO))
 			delta.tv_nsec *= 1000;
-		timekeeping_inject_offset(&delta);
+		result = timekeeping_inject_offset(&delta);
+		if (result)
+			return result;
 	}
 
 	getnstimeofday(&ts);