diff --git a/net/irda/irnet/irnet_ppp.c b/net/irda/irnet/irnet_ppp.c
index 156020d138b5..7c22c126f0ea 100644
--- a/net/irda/irnet/irnet_ppp.c
+++ b/net/irda/irnet/irnet_ppp.c
@@ -706,7 +706,8 @@ dev_irnet_ioctl(
       lock_kernel();
       if(ap->ppp_open && !put_user(ppp_unit_number(&ap->chan),
 						(int __user *)argp))
-      err = 0;
+        err = 0;
+      unlock_kernel();
       break;
 
       /* All these ioctls can be passed both directly and from ppp_generic,