[PATCH] drm/amdgpu/swsmu: disable force reprogram HW state in SR-IOV environment

[Alex Deucher]

On Thu, Sep 19, 2024 at 6:53 AM Lin.Cao <lincao12 at amd.com> wrote:
>
> SRIOV do not need to forece reprogram HW state on init which should be
> set from host side.

This function will still get called indirectly if you change the
performance level via sysfs for example.  This proposed patch avoids
the programming at init time, but it can still get called at runtime.

Alex

>
> Signed-off-by: Lin.Cao <lincao12 at amd.com>
> ---
>  drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
> index 4a6b4ad97f06..a67678ee2d3c 100644
> --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
> +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
> @@ -2234,6 +2234,9 @@ static int smu_adjust_power_state_dynamic(struct smu_context *smu,
>         long workload[1];
>         struct smu_dpm_context *smu_dpm_ctx = &(smu->smu_dpm);
>
> +       if (amdgpu_sriov_vf(adev))
> +               force_update = false;
> +
>         if (!skip_display_settings) {
>                 ret = smu_display_config_changed(smu);
>                 if (ret) {
> --
> 2.45.2
>