linux-kernel - Re: [PATCH 3/3] tpm: Fix TPM 1.2 Shutdown sequence to prevent future TPM operations

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Message-ID: <20191002135758.GA1738718@kroah.com>
Date:   Wed, 2 Oct 2019 15:57:58 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
Cc:     linux-stabley@...r.kernel.org,
        Vadim Sukhomlinov <sukhomlinov@...gle.com>,
        stable@...r.kernel.org, Douglas Anderson <dianders@...omium.org>,
        Peter Huewe <peterhuewe@....de>,
        Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
        "open list:TPM DEVICE DRIVER" <linux-integrity@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] tpm: Fix TPM 1.2 Shutdown sequence to prevent future
 TPM operations

On Wed, Oct 02, 2019 at 04:14:44PM +0300, Jarkko Sakkinen wrote:
> From: Vadim Sukhomlinov <sukhomlinov@...gle.com>
> 
> commit db4d8cb9c9f2af71c4d087817160d866ed572cc9 upstream
> 
> 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.
> 
> Fixes: d1bd4a792d39 ("tpm: Issue a TPM2_Shutdown for TPM2 devices.")
> Cc: stable@...r.kernel.org
> Signed-off-by: Vadim Sukhomlinov <sukhomlinov@...gle.com>
> [dianders: resolved merge conflicts with mainline]
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
> ---
>  drivers/char/tpm/tpm-chip.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)

What kernel version(s) is this for?

thanks,

greg k-h