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>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
index 297a549..0a4fba1 100644 (file)
--- 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;

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index 790fd54..1a656b8 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -392,7 +392,7 @@ void amdgpu_gfx_off_ctrl(struct amdgpu_device *adev, bool enable)
        if (!(adev->powerplay.pp_feature & PP_GFXOFF_MASK))
                return;
 
-       if (!adev->powerplay.pp_funcs->set_powergating_by_smu)
+       if (!adev->powerplay.pp_funcs || !adev->powerplay.pp_funcs->set_powergating_by_smu)
                return;
 
 

diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c
index 14649f8..fd23ba1 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c
@@ -280,7 +280,7 @@ void mmhub_v1_0_update_power_gating(struct amdgpu_device *adev,
                return;
 
        if (enable && adev->pg_flags & AMD_PG_SUPPORT_MMHUB) {
-               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_GMC, true);
 
        }

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index 04fa3d9..7a8c917 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -1366,7 +1366,8 @@ static int sdma_v4_0_hw_init(void *handle)
        int r;
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
-       if (adev->asic_type == CHIP_RAVEN && adev->powerplay.pp_funcs->set_powergating_by_smu)
+       if (adev->asic_type == CHIP_RAVEN && adev->powerplay.pp_funcs &&
+                       adev->powerplay.pp_funcs->set_powergating_by_smu)
                amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_SDMA, false);
 
        sdma_v4_0_init_golden_registers(adev);
@@ -1386,7 +1387,8 @@ static int sdma_v4_0_hw_fini(void *handle)
        sdma_v4_0_ctx_switch_enable(adev, false);
        sdma_v4_0_enable(adev, false);
 
-       if (adev->asic_type == CHIP_RAVEN && adev->powerplay.pp_funcs->set_powergating_by_smu)
+       if (adev->asic_type == CHIP_RAVEN && adev->powerplay.pp_funcs
+                       && adev->powerplay.pp_funcs->set_powergating_by_smu)
                amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_SDMA, true);
 
        return 0;