1 files changed, 14 insertions, 4 deletions

diff --git a/drivers/isdn/divert/divert_procfs.c b/drivers/isdn/divert/divert_procfs.c
index 9f49d9065791..c53e2417e7d4 100644
--- a/drivers/isdn/divert/divert_procfs.c
+++ b/drivers/isdn/divert/divert_procfs.c
@@ -20,6 +20,7 @@
 #include <linux/sched.h>
 #include <linux/isdnif.h>
 #include <net/net_namespace.h>
+#include <linux/smp_lock.h>
 #include "isdn_divert.h"
 
 
@@ -177,9 +178,7 @@ isdn_divert_close(struct inode *ino, struct file *filep)
 /*********/
 /* IOCTL */
 /*********/
-static int
-isdn_divert_ioctl(struct inode *inode, struct file *file,
-                  uint cmd, ulong arg)
+static int isdn_divert_ioctl_unlocked(struct file *file, uint cmd, ulong arg)
 {
         divert_ioctl dioctl;
         int i;
@@ -258,6 +257,17 @@ isdn_divert_ioctl(struct inode *inode, struct file *file,
         return copy_to_user((void __user *)arg, &dioctl, sizeof(dioctl)) ? -EFAULT : 0;
 }                               /* isdn_divert_ioctl */
 
+static long isdn_divert_ioctl(struct file *file, uint cmd, ulong arg)
+{
+        long ret;
+
+        lock_kernel();
+        ret = isdn_divert_ioctl_unlocked(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
 static const struct file_operations isdn_fops =
 {
         .owner          = THIS_MODULE,
@@ -265,7 +275,7 @@ static const struct file_operations isdn_fops =
         .read           = isdn_divert_read,
         .write          = isdn_divert_write,
         .poll           = isdn_divert_poll,
-        .ioctl          = isdn_divert_ioctl,
+        .unlocked_ioctl = isdn_divert_ioctl,
         .open           = isdn_divert_open,
         .release        = isdn_divert_close,                                      
 };