linux-kernel - Re: [PATCH] tpm_tis: Remove the HID IFX0102

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Date:   Thu, 25 Jun 2020 05:28:12 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     linux-integrity@...r.kernel.org
Cc:     Kylene Jo Hall <kjhall@...ibm.com>,
        "Ferry Toth :" <ferry.toth@...inga.info>,
        Peter Huewe <peterhuewe@....de>,
        Jason Gunthorpe <jgg@...pe.ca>, Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jerry Snitselaar <jsnitsel@...hat.com>,
        Sumit Garg <sumit.garg@...aro.org>,
        James Bottomley <James.Bottomley@...senPartnership.com>,
        Alexey Klimov <aklimov@...hat.com>,
        Andrew Morton <akpm@...l.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] tpm_tis: Remove the HID IFX0102

On Thu, Jun 25, 2020 at 02:00:33AM +0300, Jarkko Sakkinen wrote:
> Acer C720 running Linux v5.3 reports this in klog:
> 
> tpm_tis: 1.2 TPM (device-id 0xB, rev-id 16)
> tpm tpm0: tpm_try_transmit: send(): error -5
> tpm tpm0: A TPM error (-5) occurred attempting to determine the timeouts
> tpm_tis tpm_tis: Could not get TPM timeouts and durations
> tpm_tis 00:08: 1.2 TPM (device-id 0xB, rev-id 16)
> tpm tpm0: tpm_try_transmit: send(): error -5
> tpm tpm0: A TPM error (-5) occurred attempting to determine the timeouts
> tpm_tis 00:08: Could not get TPM timeouts and durations
> ima: No TPM chip found, activating TPM-bypass!
> tpm_inf_pnp 00:08: Found TPM with ID IFX0102
> 
> % git --no-pager grep IFX0102 drivers/char/tpm
> drivers/char/tpm/tpm_infineon.c:	{"IFX0102", 0},
> drivers/char/tpm/tpm_tis.c:	{"IFX0102", 0},		/* Infineon */
> 
> Obviously IFX0102 was added to the HID table for the TCG TIS driver by
> mistake.
> 
> Fixes: 93e1b7d42e1e ("[PATCH] tpm: add HID module parameter")
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=203877
> Cc: Kylene Jo Hall <kjhall@...ibm.com>
> Reported-by: Ferry Toth: <ferry.toth@...inga.info>
> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>

Sending v2 some unrelated stuff by mistake.

/Jarkko