1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/platform_gk20a.h b/drivers/gpu/nvgpu/gk20a/platform_gk20a.h
index 231f97b3..76e9cf6c 100644
--- a/drivers/gpu/nvgpu/gk20a/platform_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/platform_gk20a.h
@@ -118,6 +118,7 @@ struct gk20a_platform {
 
         /* Called to turn on the device */
         int (*unrailgate)(struct platform_device *dev);
+        struct mutex railgate_lock;
 
         /* Called to check state of device */
         bool (*is_railgated)(struct platform_device *dev);