linux-kernel - Re: [PATCH v2] tpm: tpm_tis: Narrow the AAEON DMI quirk to UPX-i11 only

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Message-Id: <CT8CBKCY3UD2.C96MBPT0BHFD@suppilovahvero>
Date:   Fri, 09 Jun 2023 21:44:40 +0300
From:   "Jarkko Sakkinen" <jarkko@...nel.org>
To:     "Peter Ujfalusi" <peter.ujfalusi@...ux.intel.com>,
        <peterhuewe@....de>
Cc:     <jgg@...pe.ca>, <linux-integrity@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <l.sanfilippo@...bus.com>,
        <jsnitsel@...hat.com>, <pmenzel@...gen.mpg.de>
Subject: Re: [PATCH v2] tpm: tpm_tis: Narrow the AAEON DMI quirk to UPX-i11
 only

On Wed May 24, 2023 at 11:58 AM EEST, Peter Ujfalusi wrote:
> The original patch which added the quirk would apply to all AAEON machines,
> which might or might not be valid.
>
> The issue was discovered on UPX-i11 (Tiger Lake), it is not known if the
> i12 (Alder Lake) version is affected.
> UP2 (Apollo Lake) does not even have TPM module (no TPM drivers probing
> and confirmed by dmidecode).
>
> Let's make the quirk to be applicable for UPX-i11 (UPX-TGL01) only.
>
> Fixes: 95a9359ee22f ("tpm: tpm_tis: Disable interrupts for AEON UPX-i11")
> Suggested-by: Jerry Snitselaar <jsnitsel@...hat.com>
> Reviewed-by: Paul Menzel <pmenzel@...gen.mpg.de>
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...ux.intel.com>
> ---
> Hi Jarkko,
>
> Changes since v1:
> - Findings from Paul Menzel in the commit message has been addressed
>
> the patch is generated on top of your
> git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git : irq-storm
>
> Regards,
> Peter
>
>  drivers/char/tpm/tpm_tis.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
> index 7db3593941ea..4357d4ba8f9e 100644
> --- a/drivers/char/tpm/tpm_tis.c
> +++ b/drivers/char/tpm/tpm_tis.c
> @@ -143,6 +143,7 @@ static const struct dmi_system_id tpm_tis_dmi_table[] = {
>  		.ident = "UPX-TGL",
>  		.matches = {
>  			DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),
> +			DMI_MATCH(DMI_PRODUCT_NAME, "UPX-TGL01"),
>  		},
>  	},
>  	{}
> -- 
> 2.40.1


I had this already applied:

https://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git/commit/?id=20e0e7d7ec975897f40b4ee635266d36f9083856

BR, Jarkko