linux-kernel - Re: [PATCH v2 1/4] tpm: Use a threaded interrupt handler

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Message-ID: <d6bf7eef-acfd-b9a0-9892-8309079684e5@linux.ibm.com>
Date:   Mon, 26 Apr 2021 10:37:23 -0400
From:   Stefan Berger <stefanb@...ux.ibm.com>
To:     Lino Sanfilippo <LinoSanfilippo@....de>, peterhuewe@....de,
        jarkko@...nel.org, jgg@...pe.ca
Cc:     stefanb@...ux.vnet.ibm.com, James.Bottomley@...senpartnership.com,
        keescook@...omium.org, jsnitsel@...hat.com, ml.linux@...oe.vision,
        linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/4] tpm: Use a threaded interrupt handler


On 4/25/21 7:47 PM, Lino Sanfilippo wrote:
> Interrupt handling at least includes reading and writing the interrupt
> status register from the interrupt routine. However over SPI those accesses
> require a sleepable context, since a mutex is used in the concerning
> functions.
> For this reason request a threaded interrupt handler which is running in
> (sleepable) process context.
>
> Signed-off-by: Lino Sanfilippo <LinoSanfilippo@....de>


Reviewed-by: Stefan Berger <stefanb@...ux.ibm.com>