gpu: nvgpu: cleanup return types for MISRA 10.3

This is a big cleanup of return types across a number of modules in the
nvgpu driver. Many functions were returning u32 but using negative
return codes. This is a MISRA 10.3 violation by assigning signed values
to a u32.

JIRA NVGPU-647

Change-Id: I59ee66706321f5b5b1a07ed8c24b81583e9ba28c
Signed-off-by: Philip Elcan <pelcan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1810743
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/volt/volt_dev.h b/drivers/gpu/nvgpu/volt/volt_dev.h
index a3dc8cf6..98f3bce9 100644
--- a/drivers/gpu/nvgpu/volt/volt_dev.h
+++ b/drivers/gpu/nvgpu/volt/volt_dev.h
@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
+* Copyright (c) 2016-2018, NVIDIA CORPORATION.  All rights reserved.
 *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -73,6 +73,6 @@ struct voltage_device_pwm_entry {
 /* PWM end */
 
 u32 volt_dev_sw_setup(struct gk20a *g);
-u32 volt_dev_pmu_setup(struct gk20a *g);
+int volt_dev_pmu_setup(struct gk20a *g);
 
 #endif /* _VOLTDEV_H_ */