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/linux-3.4.99/kernel/time/
Dntp.c803 static long hardpps_update_freq(struct pps_normtime freq_norm) in hardpps_update_freq() argument
809 if (freq_norm.sec > (2 << pps_shift)) { in hardpps_update_freq()
814 freq_norm.sec); in hardpps_update_freq()
822 ftemp = div_s64(((s64)(-freq_norm.nsec)) << NTP_SCALE_SHIFT, in hardpps_update_freq()
823 freq_norm.sec); in hardpps_update_freq()
900 struct pps_normtime pts_norm, freq_norm; in hardpps() local
923 freq_norm = pps_normalize_ts(timespec_sub(*raw_ts, pps_fbase)); in hardpps()
927 if ((freq_norm.sec == 0) || in hardpps()
928 (freq_norm.nsec > MAXFREQ * freq_norm.sec) || in hardpps()
929 (freq_norm.nsec < -MAXFREQ * freq_norm.sec)) { in hardpps()
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