drm/radeon/kms/pm: restore default power state on exit

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index f10b747..6443d9e 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -123,6 +123,10 @@
 					rdev->pm.current_power_state_index + 1;
 		}
 		break;
+	case PM_ACTION_DEFAULT:
+		rdev->pm.requested_power_state_index = rdev->pm.default_power_state_index;
+		rdev->pm.can_upclock = false;
+		break;
 	case PM_ACTION_NONE:
 	default:
 		DRM_ERROR("Requested mode for not defined action\n");