On Sat, Jun 18, 2016 at 12:19 AM, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote: > On Sat, Jun 18, 2016 at 05:24:30AM +0800, kernel test robot wrote: >> >> >> FYI, we noticed the following commit: >> >> git://anongit.freedesktop.org/drm-intel topic/drm-misc >> commit e28cd4d0a223e1bcea616326e2281900e7e7e9a2 ("drm: Automatically register/unregister all connectors") >> >> >> on test machine: vm-lkp-wsx03-yocto-i386: 1 threads qemu-system-i386 -enable-kvm with 320M memory >> >> caused below changes: > > So one driver skips drm_mode_config_init() and so > drm_connector_register_all() dies on the mutex_lock(). > > Maybe > > if (list_empty_safe(&dev->mode_config.connector_list)) > return; > > or we could add a boolean to indicate an active mode_config? list_empty_safe seems to be the simplest solution, I'd go with that one. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel