[PATCH] drm/amdgpu: Fix uninitialized return value

[Alex Deucher]

On Mon, Nov 27, 2023 at 2:22 PM Christian König
<ckoenig.leichtzumerken at gmail.com> wrote:
>
> Am 27.11.23 um 19:29 schrieb Lijo Lazar:
> > The return value is uniinitialized if ras context is NULL.
> >
> > Fixes: 0f4c8faa043c (drm/amdgpu: Move mca debug mode decision to ras)
> >
> > Signed-off-by: Lijo Lazar <lijo.lazar at amd.com>
> > ---
> >   drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> > index 1a8668a63e67..f6b47ebce9d6 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> > @@ -3410,7 +3410,7 @@ int amdgpu_ras_reset_gpu(struct amdgpu_device *adev)
> >   int amdgpu_ras_set_mca_debug_mode(struct amdgpu_device *adev, bool enable)
> >   {
> >       struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
> > -     int ret;
> > +     int ret = 0;
>
> That's usually considered very bad coding style and complained about by
> automated checkers.
>
> Instead explicitly set the return value in the code paths not actually
> setting it.

In this case, the function is so short, I think it makes things less
readable to do that.

Reviewed-by: Alex Deucher <alexander.deucher at amd.com>

>
> Regards,
> Christian.
>
> >
> >       if (con) {
> >               ret = amdgpu_mca_smu_set_debug_mode(adev, enable);
>