From: Jarkko Sakkinen <jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
To: Alexander Steffen
<Alexander.Steffen-d0qZbvYSIPpWk0Htik3J/w@public.gmane.org>
Cc: tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: [PATCH 1/3] tpm2-cmd: Trigger only missing self tests
Date: Sun, 20 Aug 2017 21:25:17 +0300 [thread overview]
Message-ID: <20170820182517.3oaow2fumhfk5she@linux.intel.com> (raw)
In-Reply-To: <20170818121532.5764-1-Alexander.Steffen-d0qZbvYSIPpWk0Htik3J/w@public.gmane.org>
On Fri, Aug 18, 2017 at 02:15:30PM +0200, Alexander Steffen wrote:
> tpm2_do_selftest is only used during initialization of the TPM to ensure
> that the device functions correctly. Therefore, it is sufficient to request
> only missing self tests (parameter full_test=0), not a reexecution of all
> self tests, as was done before. This allows for a faster execution of this
> command.
>
> Signed-off-by: Alexander Steffen <Alexander.Steffen-d0qZbvYSIPpWk0Htik3J/w@public.gmane.org>
> ---
> drivers/char/tpm/tpm2-cmd.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
> index f7f34b2a..7e328d6 100644
> --- a/drivers/char/tpm/tpm2-cmd.c
> +++ b/drivers/char/tpm/tpm2-cmd.c
> @@ -865,7 +865,7 @@ static int tpm2_start_selftest(struct tpm_chip *chip, bool full)
> }
>
> /**
> - * tpm2_do_selftest() - run a full self test
> + * tpm2_do_selftest() - ensure that all self tests have passed
> *
> * @chip: TPM chip to use
> *
> @@ -886,7 +886,7 @@ static int tpm2_do_selftest(struct tpm_chip *chip)
>
> loops = jiffies_to_msecs(duration) / delay_msec;
>
> - rc = tpm2_start_selftest(chip, true);
> + rc = tpm2_start_selftest(chip, false);
> if (rc)
> return rc;
>
> --
> 2.7.4
>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
/Jarkko
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prev parent reply other threads:[~2017-08-20 18:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-18 12:15 [PATCH 1/3] tpm2-cmd: Trigger only missing self tests Alexander Steffen
[not found] ` <20170818121532.5764-1-Alexander.Steffen-d0qZbvYSIPpWk0Htik3J/w@public.gmane.org>
2017-08-18 12:15 ` [PATCH 2/3] tpm2-cmd: Use dynamic delay to wait for self test result Alexander Steffen
[not found] ` <20170818121532.5764-2-Alexander.Steffen-d0qZbvYSIPpWk0Htik3J/w@public.gmane.org>
2017-08-20 18:26 ` Jarkko Sakkinen
[not found] ` <20170820182632.ik4d5nfm2ggashiy-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-08-22 17:44 ` Jarkko Sakkinen
2017-08-18 12:15 ` [PATCH 3/3] tpm2-cmd: React correctly to RC_TESTING from self tests Alexander Steffen
[not found] ` <20170818121532.5764-3-Alexander.Steffen-d0qZbvYSIPpWk0Htik3J/w@public.gmane.org>
2017-08-20 18:31 ` Jarkko Sakkinen
2017-08-19 17:16 ` [PATCH 1/3] tpm2-cmd: Trigger only missing " Jarkko Sakkinen
2017-08-20 18:25 ` Jarkko Sakkinen [this message]
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