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path: root/drivers/char/ipmi/ipmi_watchdog.c
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Diffstat (limited to 'drivers/char/ipmi/ipmi_watchdog.c')
-rw-r--r--drivers/char/ipmi/ipmi_watchdog.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index 0e6df289cb46..235fab0bdf79 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -35,6 +35,7 @@
#include <linux/moduleparam.h>
#include <linux/ipmi.h>
#include <linux/ipmi_smi.h>
+#include <linux/smp_lock.h>
#include <linux/watchdog.h>
#include <linux/miscdevice.h>
#include <linux/init.h>
@@ -818,6 +819,8 @@ static int ipmi_open(struct inode *ino, struct file *filep)
if (test_and_set_bit(0, &ipmi_wdog_open))
return -EBUSY;
+ cycle_kernel_lock();
+
/*
* Don't start the timer now, let it start on the
* first heartbeat.