linux-kernel - Re: [PATCH] tpm_tis: fix iTPM probe via probe

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Message-ID: <3114e3be-2bc9-7d52-ddef-60aad87997b4@maciej.szmigiero.name>
Date:   Thu, 12 Jan 2017 21:10:51 +0100
From:   "Maciej S. Szmigiero" <mail@...iej.szmigiero.name>
To:     Jason Gunthorpe <jgunthorpe@...idianresearch.com>
Cc:     tpmdd-devel@...ts.sourceforge.net,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Peter Huewe <peterhuewe@....de>,
        Marcel Selhorst <tpmdd@...horst.net>,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Christophe Ricard <christophe.ricard@...il.com>
Subject: Re: [PATCH] tpm_tis: fix iTPM probe via probe_itpm() function

On 12.01.2017 19:50, Jason Gunthorpe wrote:
> On Thu, Jan 12, 2017 at 07:12:06PM +0100, Maciej S. Szmigiero wrote:
>> probe_itpm() function is supposed to send command without an itpm flag set
>> and if this fails to repeat it, this time with the itpm flag set.
>>
>> However, commit 41a5e1cf1fe15 ("tpm/tpm_tis: Split tpm_tis driver into a
>> core and TCG TIS compliant phy") moved the itpm flag from an "itpm"
>> variable to a TPM_TIS_ITPM_POSSIBLE chip flag, so setting the
>> (now function-local) itpm variable no longer had any effect.
>>
>> Finally, this function-local itpm variable was removed by
>> commit 56af322156dbe9 ("tpm/tpm_tis: remove unused itpm variable")
>>
>> Tested only on non-iTPM TIS TPM.
>>
>> Signed-off-by: Maciej S. Szmigiero <mail@...iej.szmigiero.name>
> 
> could you also change the name of TPM_TIS_ITPM_POSSIBLE
> to TPM_TIS_ITPM_WORKAROUND ?

I will prepare such patch.

> Reviewed-by: Jason Gunthorpe <jgunthorpe@...idianresearch.com>
> Jason

Maciej