linux-kernel - [PATCH for-linus-v5.5-rc6 0/3] TPM changes for v5.5-rc6

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Message-Id: <20200103232935.11314-1-jarkko.sakkinen@linux.intel.com>
Date:   Sat,  4 Jan 2020 01:29:31 +0200
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     linux-integrity@...r.kernel.org
Cc:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Jerry Snitselaar <jsnitsel@...hat.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        linux-kernel@...r.kernel.org (open list),
        Stefan Berger <stefanb@...ux.ibm.com>
Subject: [PATCH for-linus-v5.5-rc6 0/3] TPM changes for v5.5-rc6

There has been a bunch of reports (one from kernel bugzilla linked)
reporting that when this commit is applied it causes on some machines
boot freezes.

Unfortunately hardware where this commit causes a failure is not widely
available (only one I'm aware is Lenovo T490), which means we cannot
predict yet how long it will take to properly fix tpm_tis interrupt
probing.

Thus, the least worst short term action is to revert the code to the
state before this commit. In long term we need fix the tpm_tis probing
code to work on machines that Stefan's code was supposed to fix.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=205935
Cc: Jerry Snitselaar <jsnitsel@...hat.com>
Cc: Dan Williams <dan.j.williams@...el.com>

Jarkko Sakkinen (1):
  tpm: Revert "tpm_tis: reserve chip for duration of tpm_tis_core_init"

Stefan Berger (2):
  tpm: Revert "tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for
    interrupts"
  tpm: Revert "tpm_tis_core: Turn on the TPM before probing IRQ's"

 drivers/char/tpm/tpm_tis_core.c | 34 +++++++++++++++------------------
 1 file changed, 15 insertions(+), 19 deletions(-)

-- 
2.20.1