linux-kernel - Re: [PATCH] tpm: Fix TPM 1.2 Shutdown sequence to prevent future TPM operations

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Date:   Wed, 12 Jun 2019 22:16:18 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     Peter Huewe <peterhuewe@....de>, groeck@...omium.org,
        Vadim Sukhomlinov <sukhomlinov@...gle.com>,
        apronin@...omium.org, mka@...omium.org, swboyd@...omium.org,
        Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
        Jason Gunthorpe <jgg@...pe.ca>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-integrity@...r.kernel.org
Subject: Re: [PATCH] tpm: Fix TPM 1.2 Shutdown sequence to prevent future TPM
 operations

On Mon, Jun 10, 2019 at 03:01:18PM -0700, Douglas Anderson wrote:
> From: Vadim Sukhomlinov <sukhomlinov@...gle.com>
> 
> TPM 2.0 Shutdown involve sending TPM2_Shutdown to TPM chip and disabling
> future TPM operations. TPM 1.2 behavior was different, future TPM
> operations weren't disabled, causing rare issues. This patch ensures
> that future TPM operations are disabled.
> 
> Signed-off-by: Vadim Sukhomlinov <sukhomlinov@...gle.com>
> [dianders: resolved merge conflicts with mainline]
> Signed-off-by: Douglas Anderson <dianders@...omium.org>

Nice catch. Thank you.

Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>

/Jarkko