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path: root/drivers/char/i8k.c
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Diffstat (limited to 'drivers/char/i8k.c')
-rw-r--r--drivers/char/i8k.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
index 4cd8b227c11..3bc0eef8871 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;
}