reg-in-drmdrv

drivers/gpu/drm/drm_drv.c

@@ -883,6 +883,10 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
 	if (ret)
 		goto err_minors;
 
+	ret = dynamic_debug_register_tracer(THIS_MODULE, drm_trace_printvaf);
+	if (ret)
+		goto err_dyndbg;
+
 	dev->registered = true;
 
 	if (dev->driver->load) {
@@ -902,6 +906,8 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
 
 	goto out_unlock;
 
+err_dyndbg:
+	dynamic_debug_register_tracer(THIS_MODULE, drm_trace_printvaf);
 err_minors:
 	remove_compat_control_link(dev);
 	drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
@@ -948,6 +954,7 @@ void drm_dev_unregister(struct drm_device *dev)
 	remove_compat_control_link(dev);
 	drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
 	drm_minor_unregister(dev, DRM_MINOR_RENDER);
+	dynamic_debug_unregister_tracer(THIS_MODULE, drm_trace_printvaf);
 }
 EXPORT_SYMBOL(drm_dev_unregister);