gpu: nvgpu: add checks for kzalloc() allocations

Check kzalloc() allocations for failures and return
an error if an allocation fails.

Bug 2279948

Change-Id: I8a2c3b84904da897ad6118900c11489c8656c20f
Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2020123
(cherry picked from commit fadd0014da39cb9498472494e52590db4b0bd7b9)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2298066
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/os/linux/scale.c b/drivers/gpu/nvgpu/os/linux/scale.c
index ef7996e6..388e168d 100644
--- a/drivers/gpu/nvgpu/os/linux/scale.c
+++ b/drivers/gpu/nvgpu/os/linux/scale.c
@@ -1,7 +1,7 @@
 /*
  * gk20a clock scaling profile
  *
- * Copyright (c) 2013-2018, NVIDIA Corporation. All rights reserved.
+ * Copyright (c) 2013-2020, 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,
@@ -339,6 +339,8 @@ void gk20a_scale_init(struct device *dev)
                 return;
 
         profile = nvgpu_kzalloc(g, sizeof(*profile));
+        if (!profile)
+                return;
 
         profile->dev = dev;
         profile->dev_stat.busy = false;