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Date: Sat, 15 Apr 2017 22:50:32 +0200
From: Greg KH <greg@kroah.com>
To: tpmdd-devel@lists.sourceforge.net,
        linux-security-module@vger.kernel.org,
        "Maciej S. Szmigiero" <mail@maciej.szmigiero.name>,
        stable@vger.kernel.org,
        Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
        Peter Huewe <peterhuewe@gmx.de>, Marcel Selhorst <tpmdd@selhorst.net>,
        Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
        open list <linux-kernel@vger.kernel.org>
Subject: Re: [backport v4.9] tpm_tis: use default timeout value if chip
 reports it as zero
Message-ID: <20170415205032.GA17774@kroah.com>
References: <20170415152622.14451-1-user@jsakkine-mobl1>
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On Sat, Apr 15, 2017 at 06:26:22PM +0300, Jarkko Sakkinen wrote:
> From: "Maciej S. Szmigiero" <mail@maciej.szmigiero.name>
> 
> Since commit 1107d065fdf1 ("tpm_tis: Introduce intermediate layer for
> TPM access") Atmel 3203 TPM on ThinkPad X61S (TPM firmware version 13.9)
> no longer works.  The initialization proceeds fine until we get and
> start using chip-reported timeouts - and the chip reports C and D
> timeouts of zero.
> 
> It turns out that until commit 8e54caf407b98e ("tpm: Provide a generic
> means to override the chip returned timeouts") we had actually let
> default timeout values remain in this case, so let's bring back this
> behavior to make chips like Atmel 3203 work again.
> 
> Use a common code that was introduced by that commit so a warning is
> printed in this case and /sys/class/tpm/tpm*/timeouts correctly says the
> timeouts aren't chip-original.
> 
> Fixes: 1107d065fdf1 ("tpm_tis: Introduce intermediate layer for TPM access")
> Cc: stable@vger.kernel.org
> Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

What is the git commit id for this patch in Linus's tree?

thanks,

greg k-h