linux-kernel - Re: [PATCH] tpm/tpm_tis: Disable interrupts categorically for Lenovo

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Date:   Fri, 11 Aug 2023 09:21:09 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Jarkko Sakkinen <jarkko@...nel.org>
Cc:     linux-integrity@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        stable@...r.kernel.org, "Takashi Iwai" <tiwai@...e.de>,
        Lino Sanfilippo <l.sanfilippo@...bus.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tpm/tpm_tis: Disable interrupts categorically for Lenovo

On Thu, 10 Aug 2023 20:24:33 +0200,
Jarkko Sakkinen wrote:
> 
> By large most of the entries in tpm_tis_dmi_table[] are for Lenovo laptops,
> and they keep on coming. Therefore, disable IRQs categorically for Lenovo.
> 
> Fixes: e644b2f498d2 ("tpm, tpm_tis: Enable interrupt test")
> Cc: <stable@...r.kernel.org> # v6.4+
> Reported-by: "Takashi Iwai" <tiwai@...e.de>
> Closes: https://lore.kernel.org/linux-integrity/87il9qhxjq.wl-tiwai@suse.de/
> Signed-off-by: Jarkko Sakkinen <jarkko@...nel.org>
> ---
> This will be included into v6.5-rc6 PR, as long as Takashi ack's it. I'm
> planning to send tomorrow morning (GMT+3).

Feel free to take my ack:

Acked-by: Takashi Iwai <tiwai@...e.de>

I'll build a test kernel and ask reporters for testing the fix, too.

Thanks!


Takashi

> 
> BR, Jarkko
>  drivers/char/tpm/tpm_tis.c | 34 ----------------------------------
>  1 file changed, 34 deletions(-)
> 
> diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
> index 3c0f68b9e44f..dd0f52d35073 100644
> --- a/drivers/char/tpm/tpm_tis.c
> +++ b/drivers/char/tpm/tpm_tis.c
> @@ -132,42 +132,8 @@ static const struct dmi_system_id tpm_tis_dmi_table[] = {
>  	},
>  	{
>  		.callback = tpm_tis_disable_irq,
> -		.ident = "ThinkPad T490s",
>  		.matches = {
>  			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
> -			DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T490s"),
> -		},
> -	},
> -	{
> -		.callback = tpm_tis_disable_irq,
> -		.ident = "ThinkStation P360 Tiny",
> -		.matches = {
> -			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
> -			DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkStation P360 Tiny"),
> -		},
> -	},
> -	{
> -		.callback = tpm_tis_disable_irq,
> -		.ident = "ThinkPad L490",
> -		.matches = {
> -			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
> -			DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L490"),
> -		},
> -	},
> -	{
> -		.callback = tpm_tis_disable_irq,
> -		.ident = "ThinkPad L590",
> -		.matches = {
> -			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
> -			DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L590"),
> -		},
> -	},
> -	{
> -		.callback = tpm_tis_disable_irq,
> -		.ident = "ThinkStation P620",
> -		.matches = {
> -			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
> -			DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkStation P620"),
>  		},
>  	},
>  	{
> -- 
> 2.39.2
>