diff --git a/drivers/gpu/nvgpu/os/linux/vgpu/vgpu_linux.c b/drivers/gpu/nvgpu/os/linux/vgpu/vgpu_linux.c
index 423e0e11e..a82983c24 100644
--- a/drivers/gpu/nvgpu/os/linux/vgpu/vgpu_linux.c
+++ b/drivers/gpu/nvgpu/os/linux/vgpu/vgpu_linux.c
@@ -92,6 +92,7 @@ static void vgpu_init_vars(struct gk20a *g, struct gk20a_platform *platform)
 	nvgpu_mutex_init(&g->power_lock);
 	nvgpu_mutex_init(&g->clk_arb_enable_lock);
 	nvgpu_mutex_init(&g->cg_pg_lock);
+	nvgpu_rwsem_init(&g->deterministic_busy);
 
 	nvgpu_mutex_init(&priv->vgpu_clk_get_freq_lock);