Re: [drm] e28cd4d0a2: INFO: trying to register non-static key.

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? -Chris