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From: Andrey Pronin <apronin@chromium.org>
To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: Peter Huewe <peterhuewe@gmx.de>,
	Marcel Selhorst <tpmdd@selhorst.net>,
	Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
	tpmdd-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org,
	Christophe Ricard <christophe.ricard@gmail.com>,
	dtor@chromium.org, smbarber@chromium.org, dianders@chromium.org,
	Andrey Pronin <apronin@chromium.org>
Subject: [PATCH v3 0/2] tpm: add optional max xfer size check
Date: Wed, 27 Jul 2016 20:49:55 -0700	[thread overview]
Message-ID: <1469677797-74304-1-git-send-email-apronin@chromium.org> (raw)
In-Reply-To: <1468546745-14646-1-git-send-email-apronin@chromium.org>
In-Reply-To: <1468546745-14646-1-git-send-email-apronin@chromium.org>

This patchset introduces an optional maximum transfer size that can
be specified by a tpm driver. Setting the max_xfer_size helps to catch
the cases when burstcnt is incorrectly reported by the device (e.g. >64
for spi - happened in practice) and gracefully handle such situations.

v2: removed unnecessary accessors in tpm_tis_core.h, fixed style

v3: simplified logic: simply cap the burstcnt at max_xfer_size, don't
attempt to re-request from tpm.

Andrey Pronin (2):
  tpm_tis_core: add optional max xfer size check
  tpm_tis_spi: add max xfer size

 drivers/char/tpm/tpm_tis_core.c | 9 ++++++++-
 drivers/char/tpm/tpm_tis_core.h | 1 +
 drivers/char/tpm/tpm_tis_spi.c  | 1 +
 3 files changed, 10 insertions(+), 1 deletion(-)

-- 
2.6.6

WARNING: multiple messages have this Message-ID
From: Andrey Pronin <apronin-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
To: Jarkko Sakkinen
	<jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Cc: Christophe Ricard
	<christophe.ricard-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	smbarber-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org,
	tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	dtor-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org
Subject: [PATCH v3 0/2] tpm: add optional max xfer size check
Date: Wed, 27 Jul 2016 20:49:55 -0700	[thread overview]
Message-ID: <1469677797-74304-1-git-send-email-apronin@chromium.org> (raw)
In-Reply-To: <1468546745-14646-1-git-send-email-apronin-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
In-Reply-To: <1468546745-14646-1-git-send-email-apronin-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>

This patchset introduces an optional maximum transfer size that can
be specified by a tpm driver. Setting the max_xfer_size helps to catch
the cases when burstcnt is incorrectly reported by the device (e.g. >64
for spi - happened in practice) and gracefully handle such situations.

v2: removed unnecessary accessors in tpm_tis_core.h, fixed style

v3: simplified logic: simply cap the burstcnt at max_xfer_size, don't
attempt to re-request from tpm.

Andrey Pronin (2):
  tpm_tis_core: add optional max xfer size check
  tpm_tis_spi: add max xfer size

 drivers/char/tpm/tpm_tis_core.c | 9 ++++++++-
 drivers/char/tpm/tpm_tis_core.h | 1 +
 drivers/char/tpm/tpm_tis_spi.c  | 1 +
 3 files changed, 10 insertions(+), 1 deletion(-)

-- 
2.6.6


------------------------------------------------------------------------------

  parent reply	other threads:[~2016-07-28  3:50 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-15  1:39 [PATCH " Andrey Pronin
2016-07-15  1:39 ` [PATCH 1/2] tpm_tis_core: " Andrey Pronin
2016-07-15  3:13   ` Jason Gunthorpe
2016-07-15  3:13     ` Jason Gunthorpe
2016-07-15  3:25     ` Andrey Pronin
2016-07-15  3:48       ` Guenter Roeck
2016-07-18 18:53     ` Jarkko Sakkinen
2016-07-18 18:53       ` Jarkko Sakkinen
2016-07-15  1:39 ` [PATCH 2/2] tpm_tis_spi: add max xfer size Andrey Pronin
2016-07-15  1:39   ` Andrey Pronin
2016-07-20  2:34 ` [PATCH v2 0/2] tpm: add optional max xfer size check Andrey Pronin
2016-07-20  2:34   ` Andrey Pronin
2016-07-20  2:34   ` [PATCH v2 1/2] tpm_tis_core: " Andrey Pronin
2016-07-20  2:34     ` Andrey Pronin
2016-07-20  2:34   ` [PATCH v2 2/2] tpm_tis_spi: add max xfer size Andrey Pronin
2016-07-20 15:10   ` [PATCH v2 0/2] tpm: add optional max xfer size check Jarkko Sakkinen
2016-07-20 15:10     ` Jarkko Sakkinen
2016-07-28  3:49 ` Andrey Pronin [this message]
2016-07-28  3:49   ` [PATCH v3 " Andrey Pronin
2016-07-28  3:49   ` [PATCH v3 1/2] tpm_tis_core: " Andrey Pronin
2016-07-28  3:49     ` Andrey Pronin
2016-07-28 22:52     ` Dmitry Torokhov
2016-08-09  8:14     ` Jarkko Sakkinen
2016-08-09  8:14       ` Jarkko Sakkinen
2020-11-19 10:00       ` Dafna Hirschfeld
2020-11-20 15:15         ` Jarkko Sakkinen
2016-07-28  3:49   ` [PATCH v3 2/2] tpm_tis_spi: add max xfer size Andrey Pronin
2016-07-28  3:49     ` Andrey Pronin
2016-07-28 22:53     ` Dmitry Torokhov
2016-08-09  8:14       ` Jarkko Sakkinen
2016-08-09  8:14         ` Jarkko Sakkinen

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