linux-kernel - [PATCH 4/5] watchdog: implement error handling in lockup_detector

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Date:	Mon, 28 Sep 2015 22:44:11 +0200
From:	Ulrich Obergfell <uobergfe@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, dzickus@...hat.com, atomlin@...hat.com,
	uobergfe@...hat.com
Subject: [PATCH 4/5] watchdog: implement error handling in lockup_detector_suspend()

lockup_detector_suspend() now handles errors from watchdog_park_threads().

Signed-off-by: Ulrich Obergfell <uobergfe@...hat.com>
---
 kernel/watchdog.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 457113c..3bc22a9 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -707,6 +707,11 @@ int lockup_detector_suspend(void)
 
 	if (ret == 0)
 		watchdog_suspended++;
+	else {
+		watchdog_disable_all_cpus();
+		pr_err("Failed to suspend lockup detectors, disabled\n");
+		watchdog_enabled = 0;
+	}
 
 	mutex_unlock(&watchdog_proc_mutex);
 
-- 
1.7.11.7

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