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watchdog: update watchdog_timeout with the closest timeout found by the driver

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Store the actual timeout value found by the driver in watchdog_timeout since
this value is more accurate for calculating the next time for pinging the
device.
This commit is contained in:
Franck Bui 2021-09-06 12:12:45 +02:00
parent 2628b98f0c
commit 564096795e
1 changed files with 6 additions and 1 deletions
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7
src/shared/watchdog.c
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@ -40,7 +40,12 @@ static int update_timeout(void) {
if (ioctl(watchdog_fd, WDIOC_SETTIMEOUT, &sec) < 0)
return log_warning_errno(errno, "Failed to set timeout to %is: %m", sec);
log_info("Set hardware watchdog to %s.", FORMAT_TIMESPAN(sec * USEC_PER_SEC, 0));
/* Just in case the driver is buggy */
assert(sec > 0);
/* watchdog_timeout stores the actual timeout used by the HW */
watchdog_timeout = sec * USEC_PER_SEC;
log_info("Set hardware watchdog to %s.", FORMAT_TIMESPAN(watchdog_timeout, 0));
flags = WDIOS_ENABLECARD;
if (ioctl(watchdog_fd, WDIOC_SETOPTIONS, &flags) < 0) {