linux-kernel - Re: [PATCH v3] Fix IRQ issue by setting IRQ_DISABLE

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Message-ID: <b60c56780c76272d55ea58a4a7aab7450b97c6af.camel@gmail.com>
Date:   Fri, 21 Apr 2023 10:58:57 +0200
From:   Nuno Sá <noname.nuno@...il.com>
To:     Masahiro Honda <honda@...hatrax.com>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Jonathan Cameron <jic23@...nel.org>
Cc:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] Fix IRQ issue by setting IRQ_DISABLE_UNLAZY flag

On Thu, 2023-04-20 at 19:23 +0900, Masahiro Honda wrote:
> The Sigma-Delta ADCs supported by this driver can use SDO as an interrupt
> line to indicate the completion of a conversion. However, some devices
> cannot properly detect the completion of a conversion by an interrupt.
> This is for the reason mentioned in the following commit.
> 
> commit e9849777d0e2 ("genirq: Add flag to force mask in
>                       disable_irq[_nosync]()")
> 
> A read operation is performed by an extra interrupt before the completion
> of a conversion. This patch fixes the issue by setting IRQ_DISABLE_UNLAZY
> flag.
> 
> Signed-off-by: Masahiro Honda <honda@...hatrax.com>
> ---

LGTM:

Reviewed-by: Nuno Sá <nuno.sa@...log.com