gpu: nvgpu: Add null check for g->host1x_dev

gk20a_tegra_dump_debug() is set in a platform where host1x support
is not enabled.

Change-Id: Ic57f9081d75be976a092827b253cb2a195d8f16d
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: http://git-master/r/1284336
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/platform_gk20a_tegra.c b/drivers/gpu/nvgpu/gk20a/platform_gk20a_tegra.c
index f61b14fa..87c678ea 100644
--- a/drivers/gpu/nvgpu/gk20a/platform_gk20a_tegra.c
+++ b/drivers/gpu/nvgpu/gk20a/platform_gk20a_tegra.c
@@ -1,7 +1,7 @@
 /*
  * GK20A Tegra Platform Interface
  *
- * Copyright (c) 2014-2016, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2014-2017, 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,
@@ -766,7 +766,9 @@ void gk20a_tegra_debug_dump(struct device *dev)
 {
         struct gk20a_platform *platform = gk20a_get_platform(dev);
         struct gk20a *g = platform->g;
-        nvhost_debug_dump_device(g->host1x_dev);
+
+        if (g->host1x_dev)
+                nvhost_debug_dump_device(g->host1x_dev);
 }
 
 int gk20a_tegra_busy(struct device *dev)