[PATCH 0/3] tpm: Fix TPM 1.2 Shutdown sequence to prevent future TPM operations

Jarkko Sakkinen
2019-10-03T11:24:29Z

commit db4d8cb9c9f2af71c4d087817160d866ed572cc9 upstream

This backport is for v4.14 and v4.19 The backport requires non-racy
behaviour from TPM 1.x sysfs code. Thus, the dependecies for that
are included.

NOTE: 1/3 is only needed for v4.14.

v2:
* Something happened when merging 3/3 that write lock was taken
twice. Fixed in this version. Did also sanity check test with
TPM2:
echo devices > /sys/power/pm_test && echo mem > /sys/power/state

Jarkko Sakkinen (2):
tpm: migrate pubek_show to struct tpm_buf
tpm: use tpm_try_get_ops() in tpm-sysfs.c.

Vadim Sukhomlinov (1):
tpm: Fix TPM 1.2 Shutdown sequence to prevent future TPM operations

drivers/char/tpm/tpm-chip.c | 5 +-
drivers/char/tpm/tpm-sysfs.c | 201 +++++++++++++++++++++--------------
drivers/char/tpm/tpm.h | 13 ---
3 files changed, 124 insertions(+), 95 deletions(-)

--
2.20.1