[PATCH v1 0/2] Run TPM2_Shutdown on system shutdown

This patchset causes all devices in the tpm class to issue TPM2_Shutdown
when the system is shutting down.

As a prerequisite, it adds a "shutdown" method to "struct class".

Backporting to 4.9 since this bug can lock users out of their TPMs.

Backport of f77af1516584 'Add "shutdown" to "struct class".' and
d1bd4a792d39 'tpm: Issue a TPM2_Shutdown for TPM2 devices.'

 drivers/base/core.c          |  6 +++++-
 drivers/char/tpm/tpm-chip.c  | 36 ++++++++++++++++++++++++++++++++++++
 drivers/char/tpm/tpm-sysfs.c |  5 +++++
 include/linux/device.h       |  2 ++
 4 files changed, 48 insertions(+), 1 deletion(-)