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Date:   Fri, 12 Jun 2020 11:56:04 +0200
From:   Wolfram Sang <wsa@kernel.org>
To:     Krzysztof Kozlowski <krzk@kernel.org>
Cc:     Oleksij Rempel <linux@rempel-privat.de>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Shawn Guo <shawnguo@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Fabio Estevam <festevam@gmail.com>,
        NXP Linux Team <linux-imx@nxp.com>,
        Gao Pan <b54642@freescale.com>,
        Fugang Duan <B38611@freescale.com>, linux-i2c@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        stable@vger.kernel.org
Subject: Re: [PATCH] i2c: imx: Fix external abort on early interrupt
Message-ID: <20200612095604.GA17763@ninjato>
References: <1591796802-23504-1-git-send-email-krzk@kernel.org>
 <20200612090517.GA3030@ninjato>
 <20200612092941.GA25990@pi3>
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On Fri, Jun 12, 2020 at 11:29:41AM +0200, Krzysztof Kozlowski wrote:
> On Fri, Jun 12, 2020 at 11:05:17AM +0200, Wolfram Sang wrote:
> > On Wed, Jun 10, 2020 at 03:46:42PM +0200, Krzysztof Kozlowski wrote:
> > > If interrupt comes early (could be triggered with CONFIG_DEBUG_SHIRQ),
> >=20
> > That code is disabled since 2011 (6d83f94db95c ("genirq: Disable the
> > SHIRQ_DEBUG call in request_threaded_irq for now"))? So, you had this
> > without fake injection, I assume?
>=20
> No, I observed it only after enabling DEBUG_SHIRQ (to a kernel with
> some debugging options already).

Interesting. Maybe probe was deferred and you got the extra irq when
deregistering?


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