1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index d152ceca5d37..acec26b70d0d 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -561,9 +561,12 @@ void r600_pm_misc(struct radeon_device *rdev)
         struct radeon_power_state *ps = &rdev->pm.power_state[requested_index];
         struct radeon_voltage *voltage = &ps->clock_info[0].voltage;
 
-        if ((voltage->type == VOLTAGE_SW) && voltage->voltage)
-                radeon_atom_set_voltage(rdev, voltage->voltage);
-
+        if ((voltage->type == VOLTAGE_SW) && voltage->voltage) {
+                if (voltage->voltage != rdev->pm.current_vddc) {
+                        radeon_atom_set_voltage(rdev, voltage->voltage);
+                        rdev->pm.current_vddc = voltage->voltage;
+                }
+        }
 }
 
 bool r600_gui_idle(struct radeon_device *rdev)