Re: [PATCH v5 3/3] drm: Add Generic USB Display driver

Am Freitag, den 12.02.2021, 18:46 +0100 schrieb Noralf Trønnes:

+static void gud_connector_early_unregister(struct drm_connector *connector) +{

•   struct gud_connector *gconn = to_gud_connector(connector);
  

•   backlight_device_unregister(gconn->backlight);
  

•   cancel_work_sync(&gconn->backlight_work);
  

+}

Hi,

this looks like you are creating a race condition where the queued work may operate on an already unregistered backlight.

Regards Oliver