drm/amd/powerplay: change backend allocation to backend init

backend_init and backend_fini are paired functions, backend is freed
in backend_fini and should be allocated in backend_init.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -1180,6 +1180,13 @@ static int cz_apply_state_adjust_rules(struct pp_hwmgr *hwmgr,
 static int cz_hwmgr_backend_init(struct pp_hwmgr *hwmgr)
 {
 	int result = 0;
+	struct cz_hwmgr *data;
+
+	data = kzalloc(sizeof(struct cz_hwmgr), GFP_KERNEL);
+	if (data == NULL)
+		return -ENOMEM;
+
+	hwmgr->backend = data;
 
 	result = cz_initialize_dpm_defaults(hwmgr);
 	if (result != 0) {
@@ -1909,15 +1916,7 @@ static const struct pp_hwmgr_func cz_hwmgr_funcs = {
 
 int cz_hwmgr_init(struct pp_hwmgr *hwmgr)
 {
-	struct cz_hwmgr *cz_hwmgr;
-	int ret = 0;
-
-	cz_hwmgr = kzalloc(sizeof(struct cz_hwmgr), GFP_KERNEL);
-	if (cz_hwmgr == NULL)
-		return -ENOMEM;
-
-	hwmgr->backend = cz_hwmgr;
 	hwmgr->hwmgr_func = &cz_hwmgr_funcs;
 	hwmgr->pptable_func = &pptable_funcs;
-	return ret;
+	return 0;
 }

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

@@ -593,13 +593,19 @@ static int fiji_hwmgr_backend_fini(struct pp_hwmgr *hwmgr)
 
 static int fiji_hwmgr_backend_init(struct pp_hwmgr *hwmgr)
 {
-	struct fiji_hwmgr *data = (struct fiji_hwmgr *)(hwmgr->backend);
+	struct fiji_hwmgr *data;
 	uint32_t i;
 	struct phm_ppt_v1_information *table_info =
 			(struct phm_ppt_v1_information *)(hwmgr->pptable);
 	bool stay_in_boot;
 	int result;
 
+	data = kzalloc(sizeof(struct fiji_hwmgr), GFP_KERNEL);
+	if (data == NULL)
+		return -ENOMEM;
+
+	hwmgr->backend = data;
+
 	data->dll_default_on = false;
 	data->sram_end = SMC_RAM_END;
 
@@ -5629,16 +5635,8 @@ static const struct pp_hwmgr_func fiji_hwmgr_funcs = {
 
 int fiji_hwmgr_init(struct pp_hwmgr *hwmgr)
 {
-	struct fiji_hwmgr  *data;
-	int ret = 0;
-
-	data = kzalloc(sizeof(struct fiji_hwmgr), GFP_KERNEL);
-	if (data == NULL)
-		return -ENOMEM;
-
-	hwmgr->backend = data;
 	hwmgr->hwmgr_func = &fiji_hwmgr_funcs;
 	hwmgr->pptable_func = &tonga_pptable_funcs;
 	pp_fiji_thermal_initialize(hwmgr);
-	return ret;
+	return 0;
 }

drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c

@@ -3115,13 +3115,19 @@ static int polaris10_set_private_data_based_on_pptable(struct pp_hwmgr *hwmgr)
 
 int polaris10_hwmgr_backend_init(struct pp_hwmgr *hwmgr)
 {
-	struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend);
+	struct polaris10_hwmgr *data;
 	struct pp_atomctrl_gpio_pin_assignment gpio_pin_assignment;
 	uint32_t temp_reg;
 	int result;
 	struct phm_ppt_v1_information *table_info =
 			(struct phm_ppt_v1_information *)(hwmgr->pptable);
 
+	data = kzalloc(sizeof(struct polaris10_hwmgr), GFP_KERNEL);
+	if (data == NULL)
+		return -ENOMEM;
+
+	hwmgr->backend = data;
+
 	data->dll_default_on = false;
 	data->sram_end = SMC_RAM_END;
 	data->mclk_dpm0_activity_target = 0xa;
@@ -5265,13 +5271,6 @@ static const struct pp_hwmgr_func polaris10_hwmgr_funcs = {
 
 int polaris10_hwmgr_init(struct pp_hwmgr *hwmgr)
 {
-	struct polaris10_hwmgr  *data;
-
-	data = kzalloc (sizeof(struct polaris10_hwmgr), GFP_KERNEL);
-	if (data == NULL)
-		return -ENOMEM;
-
-	hwmgr->backend = data;
 	hwmgr->hwmgr_func = &polaris10_hwmgr_funcs;
 	hwmgr->pptable_func = &tonga_pptable_funcs;
 	pp_polaris10_thermal_initialize(hwmgr);

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

@@ -4442,7 +4442,7 @@ int tonga_hwmgr_backend_init(struct pp_hwmgr *hwmgr)
 {
 	int result = 0;
 	SMU72_Discrete_DpmTable  *table = NULL;
-	tonga_hwmgr *data = (struct tonga_hwmgr *)(hwmgr->backend);
+	tonga_hwmgr *data;
 	pp_atomctrl_gpio_pin_assignment gpio_pin_assignment;
 	struct phm_ppt_v1_information *pptable_info = (struct phm_ppt_v1_information *)(hwmgr->pptable);
 	phw_tonga_ulv_parm *ulv;
@@ -4451,6 +4451,12 @@ int tonga_hwmgr_backend_init(struct pp_hwmgr *hwmgr)
 	PP_ASSERT_WITH_CODE((NULL != hwmgr),
 		"Invalid Parameter!", return -1;);
 
+	data = kzalloc(sizeof(struct tonga_hwmgr), GFP_KERNEL);
+	if (data == NULL)
+		return -ENOMEM;
+
+	hwmgr->backend = data;
+
 	data->dll_defaule_on = 0;
 	data->sram_end = SMC_RAM_END;
 
@@ -6309,14 +6315,6 @@ static const struct pp_hwmgr_func tonga_hwmgr_funcs = {
 
 int tonga_hwmgr_init(struct pp_hwmgr *hwmgr)
 {
-	tonga_hwmgr  *data;
-
-	data = kzalloc (sizeof(tonga_hwmgr), GFP_KERNEL);
-	if (data == NULL)
-		return -ENOMEM;
-	memset(data, 0x00, sizeof(tonga_hwmgr));
-
-	hwmgr->backend = data;
 	hwmgr->hwmgr_func = &tonga_hwmgr_funcs;
 	hwmgr->pptable_func = &tonga_pptable_funcs;
 	pp_tonga_thermal_initialize(hwmgr);