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path: root/drivers/parisc/eisa_eeprom.c
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Diffstat (limited to 'drivers/parisc/eisa_eeprom.c')
-rw-r--r--drivers/parisc/eisa_eeprom.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/parisc/eisa_eeprom.c b/drivers/parisc/eisa_eeprom.c
index 86e9c84a965e..5ac207932fd7 100644
--- a/drivers/parisc/eisa_eeprom.c
+++ b/drivers/parisc/eisa_eeprom.c
@@ -24,6 +24,7 @@
#include <linux/kernel.h>
#include <linux/miscdevice.h>
#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <linux/fs.h>
#include <asm/io.h>
#include <asm/uaccess.h>
@@ -83,6 +84,8 @@ static int eisa_eeprom_ioctl(struct inode *inode, struct file *file,
static int eisa_eeprom_open(struct inode *inode, struct file *file)
{
+ cycle_kernel_lock();
+
if (file->f_mode & 2)
return -EINVAL;
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