Hi Rafael,

After merging the pm tree, today's linux-next build (x86_64 allmodconfig)
failed like this:

ERROR: "configfs_unregister_subsystem" [samples/configfs/configfs_sample.ko] undefined!
ERROR: "configfs_register_subsystem" [samples/configfs/configfs_sample.ko] undefined!
ERROR: "config_group_init" [samples/configfs/configfs_sample.ko] undefined!
ERROR: "config_item_init_type_name" [samples/configfs/configfs_sample.ko] undefined!
ERROR: "config_group_init_type_name" [samples/configfs/configfs_sample.ko] undefined!
ERROR: "configfs_undepend_item" [fs/ocfs2/cluster/ocfs2_nodemanager.ko] undefined!
ERROR: "config_item_put" [fs/ocfs2/cluster/ocfs2_nodemanager.ko] undefined!
ERROR: "config_item_init_type_name" [fs/ocfs2/cluster/ocfs2_nodemanager.ko] undefined!

... and many more ...

Presumably (maybe?) caused by commit

  0bf54fcd9504 ("ACPI: add support for configfs")

though it is not obvious why this should be a problem.

I have used the version of the pm tree from next-20160708 for today.
-- 
Cheers,
Stephen Rothwell