[PATCH 3/3] watchdog: Don't change watchdog state on read of sysctl

[Don Zickus <dzickus@redhat.com>]

From: Marcin Slusarz <marcin.slusarz@gmail.com>

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: stable@kernel.org
[ add {}'s to fix a warning ]
Signed-off-by: Don Zickus <dzickus@redhat.com>
---
 kernel/watchdog.c |   10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 38af39a..6b16cb1 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -493,10 +493,12 @@ int proc_dowatchdog_enabled(struct ctl_table *table, int write,
 {
 	proc_dointvec(table, write, buffer, length, ppos);
 
-	if (watchdog_enabled)
-		watchdog_enable_all_cpus();
-	else
-		watchdog_disable_all_cpus();
+	if (write) {
+		if (watchdog_enabled)
+			watchdog_enable_all_cpus();
+		else
+			watchdog_disable_all_cpus();
+	}
 	return 0;
 }
 
-- 
1.7.3.4