Thanks. Reviewed-by: Evan Quan
> -Original Message-
> From: amd-gfx On Behalf Of Yintian
> Tao
> Sent: Tuesday, December 10, 2019 1:27 AM
> To: Deucher, Alexander ; Feng, Kenneth
>
> Cc: amd-gfx@lists.freedesktop.org; Tao, Yintian
> Subject: [PATCH] drm/amd/powerplay: avoid null pointer
>
> because some asics have no smu.ppt_funcs we need add one check for it
> otherwise it will raise null pointer problem.
>
> Signed-off-by: Yintian Tao
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> index a21ee035ca57..b8a42ebb2f5a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> @@ -160,7 +160,8 @@ static ssize_t amdgpu_get_dpm_state(struct device
> *dev,
> enum amd_pm_state_type pm;
>
> if (is_support_sw_smu(adev)) {
> - if (adev->smu.ppt_funcs->get_current_power_state)
> + if (adev->smu.ppt_funcs &&
> + adev->smu.ppt_funcs->get_current_power_state)
> pm = smu_get_current_power_state(>smu);
> else
> pm = adev->pm.dpm.user_state;
> --
> 2.17.1
>
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