[PATCH 1/2] drm/amdgpu/debugfs: fix error code when smc register accessors are NULL

[Alex Deucher]

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Alex

On Mon, Nov 27, 2023 at 5:52 PM Alex Deucher <alexander.deucher at amd.com> wrote:
>
> Should be -EOPNOTSUPP.
>
> Fixes: 5104fdf50d32 ("drm/amdgpu: Fix a null pointer access when the smc_rreg pointer is NULL")
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
> index 0e61ebdb3f3e..8d4a3ff65c18 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
> @@ -755,7 +755,7 @@ static ssize_t amdgpu_debugfs_regs_smc_read(struct file *f, char __user *buf,
>         int r;
>
>         if (!adev->smc_rreg)
> -               return -EPERM;
> +               return -EOPNOTSUPP;
>
>         if (size & 0x3 || *pos & 0x3)
>                 return -EINVAL;
> @@ -814,7 +814,7 @@ static ssize_t amdgpu_debugfs_regs_smc_write(struct file *f, const char __user *
>         int r;
>
>         if (!adev->smc_wreg)
> -               return -EPERM;
> +               return -EOPNOTSUPP;
>
>         if (size & 0x3 || *pos & 0x3)
>                 return -EINVAL;
> --
> 2.42.0
>