> Eessentially what you want to do is to detach and backup the original > NVS resources and put them back to the list with insert_resource() when > tpm_crb is removed. At least I think this is what should be done but you > should CC your patch also to the ACPI list for feedback. > > /Jarkko Yes, you are right. But, what I really want to do is requesting command/response buffer regions from NVS driver and releasing them. To detach and backup the original NVS resources with insert_resource() or remove_resource() are not needed maybe. I have some idea about it, so I have sent an email to you. Would you check the email and give comments? The link is here, https://lkml.org/lkml/2019/9/16/112 . Seunghun
