1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
index 4cd8b227c11f..3bc0eef88717 100644
--- a/drivers/char/i8k.c
+++ b/drivers/char/i8k.c
@@ -23,7 +23,7 @@
 #include <linux/seq_file.h>
 #include <linux/dmi.h>
 #include <linux/capability.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 
@@ -56,6 +56,7 @@
 
 #define I8K_TEMPERATURE_BUG     1
 
+static DEFINE_MUTEX(i8k_mutex);
 static char bios_version[4];
 
 MODULE_AUTHOR("Massimo Dal Zotto (dz@debian.org)");
@@ -399,9 +400,9 @@ static long i8k_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
 {
         long ret;
 
-        lock_kernel();
+        mutex_lock(&i8k_mutex);
         ret = i8k_ioctl_unlocked(fp, cmd, arg);
-        unlock_kernel();
+        mutex_unlock(&i8k_mutex);
 
         return ret;
 }