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_rail.h b/drivers/gpu/nvgpu/volt/volt_rail.h
index be3cbb72..6c667eed 100644
--- a/drivers/gpu/nvgpu/volt/volt_rail.h
+++ b/drivers/gpu/nvgpu/volt/volt_rail.h
@@ -85,6 +85,6 @@ u32 volt_rail_volt_dev_register(struct gk20a *g, struct voltage_rail
 
 u8 volt_rail_volt_domain_convert_to_idx(struct gk20a *g, u8 volt_domain);
 
-u32 volt_rail_sw_setup(struct gk20a *g);
-u32 volt_rail_pmu_setup(struct gk20a *g);
+int volt_rail_sw_setup(struct gk20a *g);
+int volt_rail_pmu_setup(struct gk20a *g);
 #endif