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path: root/drivers/char/viotape.c
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Diffstat (limited to 'drivers/char/viotape.c')
-rw-r--r--drivers/char/viotape.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c
index c39ddaff5e8f..977f7d35e769 100644
--- a/drivers/char/viotape.c
+++ b/drivers/char/viotape.c
@@ -46,6 +46,7 @@
#include <linux/completion.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include <asm/ioctls.h>
@@ -687,6 +688,7 @@ static int viotap_open(struct inode *inode, struct file *file)
if (op == NULL)
return -ENOMEM;
+ lock_kernel();
get_dev_info(file->f_path.dentry->d_inode, &devi);
/* Note: We currently only support one mode! */
@@ -717,6 +719,7 @@ static int viotap_open(struct inode *inode, struct file *file)
free_op:
free_op_struct(op);
+ unlock_kernel();
return ret;
}