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

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Message-ID: <h7pelzgnae6kgrydhbp2ffoj4xctux3vx3s5yhiexskaykhcha@stxphc5cc3gy>
Date:   Thu, 18 May 2023 11:28:43 -0700
From:   Jerry Snitselaar <jsnitsel@...hat.com>
To:     linux-kernel@...r.kernel.org, linux-integrity@...r.kernel.org
Cc:     Peter Zijlstra <peterz@...radead.org>, stable@...r.kernel.org,
        Peter Huewe <peterhuewe@....de>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        Jason Gunthorpe <jgg@...pe.ca>
Subject: Re: [PATCH] tpm/tpm_tis: Disable interrupts for more Lenovo devices

On Wed, May 10, 2023 at 05:54:03PM -0700, Jerry Snitselaar wrote:
> The P360 Tiny suffers from an irq storm issue like the T490s, so add
> an entry for it to tpm_tis_dmi_table, and force polling. There also
> previously was a report from the previous attempt to enable interrupts
> that involved a ThinkPad L490. So an entry is added for it as well.
> 
> Reported-by: Peter Zijlstra <peterz@...radead.org> # P360 Tiny
> Closes: https://lore.kernel.org/linux-integrity/20230505130731.GO83892@hirez.programming.kicks-ass.net/
> Cc: stable@...r.kernel.org # 6.2

For the stable folks this can be ignored though it won't hurt anything if someone does
backport it. The code enabling interrupts went into 6.4-rc1, not 6.2.

Regards,
Jerry