linux-kernel - Aw: Re: [PATCH v2] tpm, tpm_tis_spi: Allow to sleep in the interrupt handler

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Message-ID: <trinity-23757337-a194-45c1-864b-6f96a754fed1-1627645548572@3c-app-gmx-bs53>
Date:   Fri, 30 Jul 2021 13:45:48 +0200
From:   Lino Sanfilippo <LinoSanfilippo@....de>
To:     Jarkko Sakkinen <jarkko@...nel.org>
Cc:     peterhuewe@....de, jgg@...pe.ca, linus.walleij@...aro.org,
        linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: Aw: Re: [PATCH v2] tpm, tpm_tis_spi: Allow to sleep in the
 interrupt handler

Hi Jarko,

> Gesendet: Mittwoch, 23. Juni 2021 um 15:34 Uhr
> Von: "Jarkko Sakkinen" <jarkko@...nel.org>
> An: "Lino Sanfilippo" <LinoSanfilippo@....de>
> Cc: peterhuewe@....de, jgg@...pe.ca, linus.walleij@...aro.org, linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org, stable@...r.kernel.org
> Betreff: Re: [PATCH v2] tpm, tpm_tis_spi: Allow to sleep in the interrupt handler
>
> On Sun, Jun 20, 2021 at 04:34:44AM +0200, Lino Sanfilippo wrote:
> > Interrupt handling at least includes reading and writing the interrupt
> > status register within the interrupt routine. For accesses over SPI a mutex
> > is used in the concerning functions. Since this requires a sleepable
> > context request a threaded interrupt handler for this case.
> >
> > Cc: stable@...r.kernel.org
> > Fixes: 1a339b658d9d ("tpm_tis_spi: Pass the SPI IRQ down to the driver")
> > Signed-off-by: Lino Sanfilippo <LinoSanfilippo@....de>
>
> I'll test this after rc1 PR (I have one NUC which uses tpm_tis_spi).
>
> /Jarkko
>

any news from this patch? Did you already have the opportunity to test it?

Regards,
Lino