[PATCH 1/2] drm/amdgpu: fix s3 resume back, uvd dpm randomly can't disable.

[Alex Deucher]

On Fri, Oct 21, 2016 at 6:13 AM, Rex Zhu <Rex.Zhu at amd.com> wrote:
> the value of last_mclk_dpm_enable_mask will be changed if
> other clients(vce,dal) trigger set power state between enable
> and disable uvd dpm.
>
> Change-Id: I5bdca2ff7d401243780c71c8d73fdc1e8febaae1
> Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>

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

> ---
>  drivers/gpu/drm/amd/amdgpu/ci_dpm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/ci_dpm.c b/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
> index 6ecfc48..966e5bf 100644
> --- a/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
> @@ -4081,7 +4081,7 @@ static int ci_enable_uvd_dpm(struct amdgpu_device *adev, bool enable)
>                                                           pi->dpm_level_enable_mask.mclk_dpm_enable_mask);
>                 }
>         } else {
> -               if (pi->last_mclk_dpm_enable_mask & 0x1) {
> +               if (pi->uvd_enabled == true) {
>                         pi->uvd_enabled = false;
>                         pi->dpm_level_enable_mask.mclk_dpm_enable_mask |= 1;
>                         amdgpu_ci_send_msg_to_smc_with_parameter(adev,
> --
> 1.9.1
>
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