Hi Dave, Daniel,

This is a regression causing many failures in intel-gfx CI.

[ 295.164523] [drm:drm_debugfs_init] *ERROR* Cannot create /sys/kernel/debug/dri/0 [ 295.164531] [drm:drm_minor_register] *ERROR* DRM: Failed to initialize /sys/kernel/debug/dri. [ 295.167544] i915: probe of 0000:00:02.0 failed with error -1

After bisect:

commit d2307dea14a4f14a4b5db01b6d40a30fa6117e6c Author: Dave Airlie airlied@redhat.com Date: Wed Apr 27 11:27:39 2016 +1000

drm/atomic: use connector references (v3)

Take a reference when setting a crtc on a connecter, also take one when duplicating if a crtc is set, and drop one on destroy if a crtc is set.

v2: take Daniel Stone's advice and simplify the ref/unref dances, also take care of NULL as connector to state reset.

v3: remove need for connector NULL check.

Reviewed-by: Daniel Stone daniels@collabora.com Reviewed-by: Daniel Vetter daniel.vetter@ffwll.ch Signed-off-by: Dave Airlie airlied@redhat.com

Regards, Gabriel