drm/amdgpu: Fix null point error

need to check adev->powerplay.pp_funcs first, becasue from
AI, the smu ip can be disabled by user, and the pp_handle
is null in this case.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
index 297a5490ad8c..0a4fba196b84 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
@@ -135,7 +135,8 @@ static int acp_poweroff(struct generic_pm_domain *genpd)
          * 2. power off the acp tiles
          * 3. check and enter ulv state
          */
-                if (adev->powerplay.pp_funcs->set_powergating_by_smu)
+                if (adev->powerplay.pp_funcs &&
+                        adev->powerplay.pp_funcs->set_powergating_by_smu)
                         amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, true);
         }
         return 0;
@@ -517,7 +518,8 @@ static int acp_set_powergating_state(void *handle,
         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
         bool enable = state == AMD_PG_STATE_GATE ? true : false;
 
-        if (adev->powerplay.pp_funcs->set_powergating_by_smu)
+        if (adev->powerplay.pp_funcs &&
+                adev->powerplay.pp_funcs->set_powergating_by_smu)
                 amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, enable);
 
         return 0;