watchdog: Don't change watchdog state on read of sysctl

Signed-off-by: Marcin Slusarz <[email protected]>
[ add {}'s to fix a warning ]
Signed-off-by: Don Zickus <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: <[email protected]>
LKML-Reference: <1296230433[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>

diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index c7e0049344bd6eb069a3542a90b1994cd621d917..f37f974aa81b503aabad7e6fc479494e86325a06 100644 (file)
--- 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;
 }