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phc2sys: common code exit point for bad usage case 

Removed duplicate calls to usage() by providing common exit point for the case.

Signed-off-by: Libor Pechacek <lpechacek@suse.cz>
master
Libor Pechacek 2013-06-17 16:54:02 +02:00 committed by Richard Cochran
parent f394e1796d
commit daca2773de
1 changed files with 9 additions and 10 deletions
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19
phc2sys.c
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@ -684,37 +684,32 @@ int main(int argc, char *argv[])
usage(progname);
return 0;
default:
usage(progname);
return -1;
goto bad_usage;
}
}
if (pps_fd < 0 && src == CLOCK_INVALID) {
fprintf(stderr,
"valid source clock must be selected.\n");
usage(progname);
return -1;
goto bad_usage;
}
if (dst_clock.clkid == CLOCK_INVALID) {
fprintf(stderr,
"valid destination clock must be selected.\n");
usage(progname);
return -1;
goto bad_usage;
}
if (pps_fd >= 0 && dst_clock.clkid != CLOCK_REALTIME) {
fprintf(stderr,
"cannot use a pps device unless destination is CLOCK_REALTIME\n");
usage(progname);
return -1;
goto bad_usage;
}
if (!wait_sync && !forced_sync_offset) {
fprintf(stderr,
"time offset must be specified using -w or -O\n");
usage(progname);
return -1;
goto bad_usage;
}
if (dst_clock.stats_max_count > 0) {
@ -793,4 +788,8 @@ int main(int argc, char *argv[])
phc_readings);
return do_phc_loop(&dst_clock, src, &phc_interval_tp, phc_readings);
bad_usage:
usage(progname);
return -1;
}