linux-kernel - Re: [PATCH v2] tpm: Fix the description error of the help information in Kconfig

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Date:   Tue, 28 Jul 2020 20:33:12 +0800
From:   Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Christophe Ricard <christophe.ricard@...il.com>,
        Peter Huewe <peterhuewe@....de>,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        gregkh <gregkh@...uxfoundation.org>,
        linux-integrity@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] tpm: Fix the description error of the help information
 in Kconfig



On 2020/7/27 16:32, Arnd Bergmann wrote:
> On Mon, Jul 27, 2020 at 10:22 AM Tianjia Zhang
> <tianjia.zhang@...ux.alibaba.com> wrote:
>>
>> SPI protocol standardized by the TCG is described in the TCG PTP
>> specification 1.3 (chapter 6.4.6 SPI Bit Protocol), It was published by
>> TCG_PCClientTPMInterfaceSpecification_TIS__1-3_27_03212013.pdf.
> 
> I'm still not convinced you got this right, the document you cite only
> seems to mention TPM 1.2 as the base for TIS 1.3, but not TPM 1.3.
> 
>       Arnd
> 

You are right, I was careless, thanks for your reply.

Thanks and best,
Tianjia

>> The TPM version number in the help message is wrong, which will
>> cause confusion. This patch fixes it.
>>
>> Fixes: 0edbfea537d1 ("tpm/tpm_tis_spi: Add support for spi phy")
>> Signed-off-by: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
>> ---
>>   drivers/char/tpm/Kconfig | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig
>> index 58b4c573d176..8eedb3e704f3 100644
>> --- a/drivers/char/tpm/Kconfig
>> +++ b/drivers/char/tpm/Kconfig
>> @@ -62,7 +62,7 @@ config TCG_TIS_SPI
>>          help
>>            If you have a TPM security chip which is connected to a regular,
>>            non-tcg SPI master (i.e. most embedded platforms) that is compliant with the
>> -         TCG TIS 1.3 TPM specification (TPM1.2) or the TCG PTP FIFO
>> +         TCG TIS 1.3 TPM specification (TPM1.3) or the TCG PTP FIFO
>>            specification (TPM2.0) say Yes and it will be accessible from
>>            within Linux. To compile this driver as a module, choose  M here;
>>            the module will be called tpm_tis_spi.
>> --
>> 2.17.1
>>