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watchdog: implement error handling in lockup_detector_suspend() 

lockup_detector_suspend() now handles errors from watchdog_park_threads().

Signed-off-by: Ulrich Obergfell <uobergfe@redhat.com>
Reviewed-by: Aaron Tomlin <atomlin@redhat.com>
Acked-by: Don Zickus <dzickus@redhat.com>
Cc: Ulrich Obergfell <uobergfe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ulrich Obergfell 2015-11-05 18:44:36 -08:00 committed by Linus Torvalds
parent b43cb43cb8
commit c993590c6a
1 changed files with 5 additions and 0 deletions
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5
kernel/watchdog.c
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@ -707,6 +707,11 @@ int lockup_detector_suspend(void)
if (ret == 0) if (ret == 0)
watchdog_suspended++; watchdog_suspended++;
else {
watchdog_disable_all_cpus();
pr_err("Failed to suspend lockup detectors, disabled\n");
watchdog_enabled = 0;
}
mutex_unlock(&watchdog_proc_mutex); mutex_unlock(&watchdog_proc_mutex);