1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
index c028e3b1..034de53f 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
@@ -1,7 +1,7 @@
 /*
  * GK20A graphics channel
  *
- * Copyright (c) 2011-2014, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2011-2015, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -84,6 +84,7 @@ struct channel_gk20a {
         bool first_init;
         bool vpr;
         pid_t pid;
+        struct mutex ioctl_lock;
 
         int tsgid;
         struct list_head ch_entry; /* channel's entry in TSG */