1 files changed, 14 insertions, 3 deletions

diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index ee5837522f5a..0cabe31f26df 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -787,8 +787,7 @@ capi_poll(struct file *file, poll_table * wait)
 }
 
 static int
-capi_ioctl(struct inode *inode, struct file *file,
-           unsigned int cmd, unsigned long arg)
+capi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
         struct capidev *cdev = file->private_data;
         capi_ioctl_struct data;
@@ -981,6 +980,18 @@ register_out:
         }
 }
 
+static long
+capi_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = capi_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 static int capi_open(struct inode *inode, struct file *file)
 {
         struct capidev *cdev;
@@ -1026,7 +1037,7 @@ static const struct file_operations capi_fops =
         .read           = capi_read,
         .write          = capi_write,
         .poll           = capi_poll,
-        .ioctl          = capi_ioctl,
+        .unlocked_ioctl = capi_unlocked_ioctl,
         .open           = capi_open,
         .release        = capi_release,
 };