linux-kernel - Re: [PATCH v4 1/2] fTPM: firmware TPM running in TEE

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Message-ID: <20190605140848.GB11331@linux.intel.com>
Date:   Wed, 5 Jun 2019 17:09:31 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Sumit Garg <sumit.garg@...aro.org>
Cc:     Sasha Levin <sashal@...nel.org>, peterhuewe@....de, jgg@...pe.ca,
        corbet@....net,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-doc@...r.kernel.org, linux-integrity@...r.kernel.org,
        Microsoft Linux Kernel List <linux-kernel@...rosoft.com>,
        Thirupathaiah Annapureddy <thiruan@...rosoft.com>,
        "Bryan Kelly (CSI)" <bryankel@...rosoft.com>,
        tee-dev@...ts.linaro.org
Subject: Re: [PATCH v4 1/2] fTPM: firmware TPM running in TEE

On Tue, Jun 04, 2019 at 11:45:52AM +0530, Sumit Garg wrote:
> Is this well tested? I see this misleading error multiple times as
> follows although TEE driver works pretty well.
> 
> Module built with "CONFIG_TCG_FTPM_TEE=y"
> 
> [    1.436878] ftpm-tee tpm@0: ftpm_tee_probe:tee_client_open_context failed
> [    1.509471] ftpm-tee tpm@0: ftpm_tee_probe:tee_client_open_context failed
> [    1.517268] ftpm-tee tpm@0: ftpm_tee_probe:tee_client_open_context failed
> [    1.525596] ftpm-tee tpm@0: ftpm_tee_probe:tee_client_open_context failed
> 
> -Sumit

No testing done from my part.

/Jarkko