1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index 654d566ca57c..320668f4c3aa 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -35,7 +35,7 @@
 #include <linux/moduleparam.h>
 #include <linux/ipmi.h>
 #include <linux/ipmi_smi.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/watchdog.h>
 #include <linux/miscdevice.h>
 #include <linux/init.h>
@@ -149,6 +149,7 @@
 #define WDIOC_GET_PRETIMEOUT     _IOW(WATCHDOG_IOCTL_BASE, 22, int)
 #endif
 
+static DEFINE_MUTEX(ipmi_watchdog_mutex);
 static int nowayout = WATCHDOG_NOWAYOUT;
 
 static ipmi_user_t watchdog_user;
@@ -748,9 +749,9 @@ static long ipmi_unlocked_ioctl(struct file *file,
 {
         int ret;
 
-        lock_kernel();
+        mutex_lock(&ipmi_watchdog_mutex);
         ret = ipmi_ioctl(file, cmd, arg);
-        unlock_kernel();
+        mutex_unlock(&ipmi_watchdog_mutex);
 
         return ret;
 }
@@ -844,7 +845,6 @@ 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
@@ -909,6 +909,7 @@ static const struct file_operations ipmi_wdog_fops = {
         .open    = ipmi_open,
         .release = ipmi_close,
         .fasync  = ipmi_fasync,
+        .llseek  = no_llseek,
 };
 
 static struct miscdevice ipmi_wdog_miscdev = {
@@ -1080,7 +1081,7 @@ ipmi_nmi(struct notifier_block *self, unsigned long val, void *data)
 {
         struct die_args *args = data;
 
-        if (val != DIE_NMI)
+        if (val != DIE_NMIUNKNOWN)
                 return NOTIFY_OK;
 
         /* Hack, if it's a memory or I/O error, ignore it. */