1 files changed, 4 insertions, 3 deletions

diff --git a/net/wanrouter/wanmain.c b/net/wanrouter/wanmain.c
index 258daa80ad92..2bf23406637a 100644
--- a/net/wanrouter/wanmain.c
+++ b/net/wanrouter/wanmain.c
@@ -48,7 +48,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>       /* support for loadable modules */
 #include <linux/slab.h>         /* kmalloc(), kfree() */
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/mm.h>
 #include <linux/string.h>       /* inline mem*, str* functions */
 
@@ -71,6 +71,7 @@
  *      WAN device IOCTL handlers
  */
 
+static DEFINE_MUTEX(wanrouter_mutex);
 static int wanrouter_device_setup(struct wan_device *wandev,
                                   wandev_conf_t __user *u_conf);
 static int wanrouter_device_stat(struct wan_device *wandev,
@@ -376,7 +377,7 @@ long wanrouter_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
         if (wandev->magic != ROUTER_MAGIC)
                 return -EINVAL;
 
-        lock_kernel();
+        mutex_lock(&wanrouter_mutex);
         switch (cmd) {
         case ROUTER_SETUP:
                 err = wanrouter_device_setup(wandev, data);
@@ -408,7 +409,7 @@ long wanrouter_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                         err = wandev->ioctl(wandev, cmd, arg);
                 else err = -EINVAL;
         }
-        unlock_kernel();
+        mutex_unlock(&wanrouter_mutex);
         return err;
 }