cirrus_modeset_init() is initializing/registering the emulated fbdev and, since commit c61b93fe51b1 ("drm/atomic: Fix remaining places where !funcs->best_encoder is valid"), DRM internals can access/test some of the fields in mode_config->funcs as part of the fbdev registration process. Make sure dev->mode_config.funcs is properly set to avoid dereferencing a NULL pointer. Reported-by: Mike Marshall <hubcap@omnibond.com> Reported-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Fixes: c61b93fe51b1 ("drm/atomic: Fix remaining places where !funcs->best_encoder is valid") Signed-off-by: Dave Airlie <airlied@redhat.com>