Merge branch 'drm-fixes-4.9' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

3 more amdgpu fixes.

* 'drm-fixes-4.9' of git://people.freedesktop.org/~agd5f/linux:
  drm/amd/powerplay: return false instead of -EINVAL
  drm/amdgpu/powerplay/smu7: fix unintialized data usage
  drm/amdgpu: fix crash in acp_hw_fini

drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c

@@ -395,9 +395,12 @@ static int acp_hw_fini(void *handle)
 {
 	int i, ret;
 	struct device *dev;
-
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	/* return early if no ACP */
+	if (!adev->acp.acp_genpd)
+		return 0;
+
 	for (i = 0; i < ACP_DEVS ; i++) {
 		dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i);
 		ret = pm_genpd_remove_device(&adev->acp.acp_genpd->gpd, dev);

drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c

@@ -272,7 +272,7 @@ bool phm_check_smc_update_required_for_display_configuration(struct pp_hwmgr *hw
 	PHM_FUNC_CHECK(hwmgr);
 
 	if (hwmgr->hwmgr_func->check_smc_update_required_for_display_configuration == NULL)
-		return -EINVAL;
+		return false;
 
 	return hwmgr->hwmgr_func->check_smc_update_required_for_display_configuration(hwmgr);
 }

drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c

@@ -2133,9 +2133,11 @@ static int smu7_patch_limits_vddc(struct pp_hwmgr *hwmgr,
 	struct smu7_hwmgr *data = (struct smu7_hwmgr *)(hwmgr->backend);
 
 	if (tab) {
+		vddc = tab->vddc;
 		smu7_patch_ppt_v0_with_vdd_leakage(hwmgr, &vddc,
 						   &data->vddc_leakage);
 		tab->vddc = vddc;
+		vddci = tab->vddci;
 		smu7_patch_ppt_v0_with_vdd_leakage(hwmgr, &vddci,
 						   &data->vddci_leakage);
 		tab->vddci = vddci;