From: Javier Martinez Canillas <javierm@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: James Ettle <james@ettle.org.uk>,
Hans de Goede <hdegoede@redhat.com>,
Azhar Shaikh <azhar.shaikh@intel.com>,
Javier Martinez Canillas <javierm@redhat.com>,
Arnd Bergmann <arnd@arndb.de>,
Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
Peter Huewe <peterhuewe@gmx.de>, Jason Gunthorpe <jgg@ziepe.ca>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-integrity@vger.kernel.org
Subject: [PATCH 0/4] tpm: fix PS/2 devices not working on Braswell systems due CLKRUN enabled
Date: Wed, 20 Dec 2017 12:35:34 +0100 [thread overview]
Message-ID: <20171220113538.16099-1-javierm@redhat.com> (raw)
Hello,
Commit 5e572cab92f0 ("tpm: Enable CLKRUN protocol for Braswell systems")
added logic in the TPM TIS driver to disable the Low Pin Count CLKRUN
signal during TPM transactions.
Unfortunately this breaks other devices that are attached to the LPC bus
like for example PS/2 mouse and keyboards.
The bug was reported to the Fedora kernel [0] and the kernel bugzilla [1].
This issue and the propossed solution were discussed in this [2] thread,
and the reporter (Jame Ettle) confirmed that his system works again after
the fix in this series.
The patches are based on top or Jarkko Sakkinen's linux-tpmdd [3] tree.
James,
Even when there shouldn't be any functional changes, I included some other
fixes / cleanups in this series so it would be great if you can test them
again. I can't because I don't have access to a machine affected by this.
[0]: https://bugzilla.redhat.com/show_bug.cgi?id=1498987
[1]: https://bugzilla.kernel.org/show_bug.cgi?id=197287
[2]: https://patchwork.kernel.org/patch/10119417/
[3]: git.infradead.org/users/jjs/linux-tpmdd.git
Best regards,
Javier
Javier Martinez Canillas (4):
tpm: fix access attempt to an already unmapped I/O memory region
tpm: delete the TPM_TIS_CLK_ENABLE flag
tpm: follow coding style for variable declaration in
tpm_tis_core_init()
tpm: only attempt to disable the LPC CLKRUN if is already enabled
drivers/char/tpm/tpm_tis.c | 17 +----------------
drivers/char/tpm/tpm_tis_core.c | 24 +++++++++++++++++-------
drivers/char/tpm/tpm_tis_core.h | 1 -
3 files changed, 18 insertions(+), 24 deletions(-)
--
2.14.3
next reply other threads:[~2017-12-20 11:35 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-20 11:35 Javier Martinez Canillas [this message]
2017-12-20 11:35 ` [PATCH 1/4] tpm: fix access attempt to an already unmapped I/O memory region Javier Martinez Canillas
2017-12-20 15:25 ` Shaikh, Azhar
2017-12-20 18:08 ` Jason Gunthorpe
2017-12-20 18:21 ` Javier Martinez Canillas
2017-12-20 18:54 ` Jason Gunthorpe
2017-12-20 19:15 ` Shaikh, Azhar
2017-12-21 12:48 ` Javier Martinez Canillas
2017-12-21 15:39 ` Shaikh, Azhar
2017-12-21 15:53 ` Javier Martinez Canillas
2017-12-21 16:34 ` Shaikh, Azhar
2017-12-22 18:35 ` Jarkko Sakkinen
2017-12-24 20:57 ` Jarkko Sakkinen
2017-12-20 11:35 ` [PATCH 2/4] tpm: delete the TPM_TIS_CLK_ENABLE flag Javier Martinez Canillas
2017-12-20 15:19 ` Shaikh, Azhar
2017-12-20 18:10 ` Jason Gunthorpe
2017-12-20 18:26 ` Javier Martinez Canillas
2017-12-22 18:38 ` Jarkko Sakkinen
2017-12-22 18:33 ` Jarkko Sakkinen
2017-12-20 11:35 ` [PATCH 3/4] tpm: follow coding style for variable declaration in tpm_tis_core_init() Javier Martinez Canillas
2017-12-22 18:32 ` Jarkko Sakkinen
2017-12-20 11:35 ` [PATCH 4/4] tpm: only attempt to disable the LPC CLKRUN if is already enabled Javier Martinez Canillas
2017-12-22 18:36 ` Jarkko Sakkinen
2017-12-20 11:43 ` [PATCH 0/4] tpm: fix PS/2 devices not working on Braswell systems due CLKRUN enabled Hans de Goede
2017-12-20 12:12 ` Javier Martinez Canillas
2017-12-20 14:07 ` Alexander.Steffen
2017-12-20 14:35 ` Javier Martinez Canillas
2017-12-20 15:08 ` Shaikh, Azhar
2017-12-20 15:31 ` Javier Martinez Canillas
2017-12-20 15:41 ` Shaikh, Azhar
2017-12-20 16:45 ` Javier Martinez Canillas
2017-12-20 17:44 ` Jason Gunthorpe
2017-12-20 18:33 ` Javier Martinez Canillas
2017-12-22 18:39 ` Jarkko Sakkinen
2017-12-21 10:51 ` James Ettle
2017-12-21 12:46 ` Javier Martinez Canillas
2017-12-21 17:25 ` Jeffery Miller
2017-12-21 18:44 ` Javier Martinez Canillas
2017-12-21 19:02 ` Jeffery Miller
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