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kselftests: timers: Check _ALARM clockids are supported before suspending

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It was reported that the alarmtimer-suspend test hangs on older
systems that don't support _ALARM clockids.

This is due to the fact that we don't check if the timer_create
fails, and thus when we suspend, the system will not programatically
resume.

Fix this by checking the timer_create call for errors.

Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
This commit is contained in:
John Stultz 2015-05-13 15:13:05 -07:00 committed by Shuah Khan
parent acd5705d2d
commit 61171d0407
1 changed files with 5 additions and 1 deletions
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6
tools/testing/selftests/timers/alarmtimer-suspend.c
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@ -152,7 +152,11 @@ int main(void)
alarm_clock_id++) {
alarmcount = 0;
timer_create(alarm_clock_id, &se, &tm1);
if (timer_create(alarm_clock_id, &se, &tm1) == -1) {
printf("timer_create failled, %s unspported?\n",
clockstring(alarm_clock_id));
break;
}
clock_gettime(alarm_clock_id, &start_time);
printf("Start time (%s): %ld:%ld\n", clockstring(alarm_clock_id),