[PATCH 4.12 114/196] drm/amd/powerplay: fix memory leak in cz_hwmgr backend

[Greg Kroah-Hartman]

4.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hawking Zhang <Hawking.Zhang@xxxxxxx>

commit b1e8b9c5b19c58e3159c2acc77167f4a4c74621f upstream.

vddc_dep_on_dal_pwrl is allocated and initialized in cz_hwmgr_backend_init
Thus free the memory in cz_hwmgr_backend_fini

Signed-off-by: Hawking Zhang <Hawking.Zhang@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c
@@ -1224,6 +1224,12 @@ static int cz_hwmgr_backend_fini(struct
 		phm_destroy_table(hwmgr, &(hwmgr->disable_dynamic_state_management));
 		phm_destroy_table(hwmgr, &(hwmgr->power_down_asic));
 		phm_destroy_table(hwmgr, &(hwmgr->setup_asic));
+
+		if (NULL != hwmgr->dyn_state.vddc_dep_on_dal_pwrl) {
+			kfree(hwmgr->dyn_state.vddc_dep_on_dal_pwrl);
+			hwmgr->dyn_state.vddc_dep_on_dal_pwrl = NULL;
+		}
+
 		kfree(hwmgr->backend);
 		hwmgr->backend = NULL;
 	}