On Thu, Jun 01, 2017 at 09:33:43AM -0700, Josh Zimmerman wrote:
> - if (dev->bus && dev->bus->shutdown) {
> + if (dev->class && dev->class->shutdown) {
> + if (initcall_debug)
> + dev_info(dev, "shutdown\n");
> + dev->class->shutdown(dev);
> + } else if (dev->bus && dev->bus->shutdown) {
> if (initcall_debug)
> dev_info(dev, "shutdown\n");
> dev->bus->shutdown(dev);
Looking at this closer, now you definately have to change the TPM
patch to call through to the other shutdown methods. We can say
current TPM drivers have no driver->shutdown, but we cannot be sure
about the bus->shutdown, so may as well call both from tpm's
class->shutdown.
I would say this should be done after the tpm2_shutdown completes as
lower level shutdowns could remove register access.
Jason
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