linux-kernel - [PATCH] watchdog: Fix watchdog_nmi_enable

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Message-Id: <1429714069-176478-1-git-send-email-dzickus@redhat.com>
Date:	Wed, 22 Apr 2015 10:47:49 -0400
From:	Don Zickus <dzickus@...hat.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Ulrich Obergfell <uobergfe@...hat.com>,
	Don Zickus <dzickus@...hat.com>
Subject: [PATCH] watchdog: Fix watchdog_nmi_enable_all()

From: Ulrich Obergfell <uobergfe@...hat.com>

The 'watchdog_user_enabled' variable is only used as an 'interface'
to the /proc/sys/kernel/watchdog parameter. The actual state of the
watchdog is tracked by bits in the 'watchdog_enabled' variable. So,
watchdog_nmi_enable_all() should check the NMI_WATCHDOG_ENABLED bit
in 'watchdog_enabled'.

Signed-off-by: Ulrich Obergfell <uobergfe@...hat.com>
Signed-off-by: Don Zickus <dzickus@...hat.com>
---
 kernel/watchdog.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 2316f50..cba2110 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -608,7 +608,7 @@ void watchdog_nmi_enable_all(void)
 {
 	int cpu;
 
-	if (!watchdog_user_enabled)
+	if (!(watchdog_enabled & NMI_WATCHDOG_ENABLED))
 		return;
 
 	get_online_cpus();
-- 
2.1.0

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