https://bugs.freedesktop.org/show_bug.cgi?id=105725
--- Comment #13 from Petr Cvek petrcvekcz@gmail.com --- Comment on attachment 142485 --> https://bugs.freedesktop.org/attachment.cgi?id=142485 Suggested fix with a semaphore
It seems there is a race condition between multiple threads which calls dal_ddc_open(). With attached patch (testing only, ugly) there are no warnings anymore.