Package: util-linux
Version: 2.25.2-6
Severity: normal
Dear Maintainer,
rc = select(rtc_fd + 1, &rfds, NULL, NULL, &tv);
ret = 1;
if (rc == -1)
warn(_("select() to %s to wait for
clock tick failed"),
rtc_dev_name);
else if (rc == 0 && debug)
printf(_("select() to %s to wait for
clock tick timed out"),
rtc_dev_name);
else
ret = 0;
When 'select' times out and returns 0, synchronize_to_clock_tick_rtc
returns either 1 or 0, depnding on whether the -D option (debug) was
used. This causes hwclock -r to succeed and hwclock -r -D to return an
error. In one case, it just fails, in the other, the values are off by
the timeout period (10 seconds, in this version).
pi@test-pi ~/dev/util-linux-2.25.2 $ sudo ./hwclock -r
Thu 16 Apr 2015 19:18:44 UTC -10.016913 seconds
pi@test-pi ~/dev/util-linux-2.25.2 $ sudo ./hwclock -r -D
hwclock from util-linux 2.25.2
Using the /dev interface to the clock.
Last drift adjustment done at 1429205484 seconds after 1969
Last calibration done at 1429205484 seconds after 1969
Hardware clock is on UTC time
Assuming hardware clock is kept in UTC time.
Waiting for clock tick...
select() to /dev/rtc0 to wait for clock tick timed out...synchronization
failed
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