linux-kernel - Re: [PATCH] tpm: Don't make vendor check required for probe

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Message-ID: <7eaf0f76-5820-e404-905e-892610eaed36@dustymabe.com>
Date:   Mon, 28 Aug 2023 11:47:12 -0400
From:   Dusty Mabe <dusty@...tymabe.com>
To:     Mario Limonciello <mario.limonciello@....com>, jarkko@...nel.org
Cc:     linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        Thorsten Leemhuis <regressions@...mhuis.info>,
        charles.d.prestopine@...el.com, rafael.j.wysocki@...el.com,
        len.brown@...el.com, stable@...r.kernel.org,
        Todd Brandt <todd.e.brandt@...el.com>
Subject: Re: [PATCH] tpm: Don't make vendor check required for probe



On 8/18/23 14:15, Mario Limonciello wrote:
> The vendor check introduced by commit 554b841d4703 ("tpm: Disable RNG for
> all AMD fTPMs") doesn't work properly on Intel fTPM.  The TPM doesn't reply
> at bootup and returns back the command code.
> 
> As this isn't crucial for anything but AMD fTPM and AMD fTPM works, throw
> away the error code to let Intel fTPM continue to work.
> 

FWIW there is a Fedora bug where several people are reporting similar issues:
https://bugzilla.redhat.com/show_bug.cgi?id=2232888

Dusty