Re: [PATCH V2] drm/amd/pm: fix the compile warning

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On Tue, Apr 26, 2022 at 5:47 AM Evan Quan <evan.quan@xxxxxxx> wrote:
>
> Fix the compile warning below:
> drivers/gpu/drm/amd/amdgpu/../pm/legacy-dpm/kv_dpm.c:1641
> kv_get_acp_boot_level() warn: always true condition '(table->entries[i]->clk >= 0) => (0-u32max >= 0)'
>
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> CC: Alex Deucher <alexander.deucher@xxxxxxx>
> Signed-off-by: Evan Quan <evan.quan@xxxxxxx>

Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>

> Change-Id: If4985252017023d6711b4d7eb1192a397baff813
> --
> v1->v2:
>   - drop dead code(Alex)
> ---
>  drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c | 14 +-------------
>  1 file changed, 1 insertion(+), 13 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c b/drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c
> index 8b23cc9f098a..8fd0782a2b20 100644
> --- a/drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c
> +++ b/drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c
> @@ -1623,19 +1623,7 @@ static int kv_update_samu_dpm(struct amdgpu_device *adev, bool gate)
>
>  static u8 kv_get_acp_boot_level(struct amdgpu_device *adev)
>  {
> -       u8 i;
> -       struct amdgpu_clock_voltage_dependency_table *table =
> -               &adev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table;
> -
> -       for (i = 0; i < table->count; i++) {
> -               if (table->entries[i].clk >= 0) /* XXX */
> -                       break;
> -       }
> -
> -       if (i >= table->count)
> -               i = table->count - 1;
> -
> -       return i;
> +       return 0;
>  }
>
>  static void kv_update_acp_boot_level(struct amdgpu_device *adev)
> --
> 2.29.0
>



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