From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
Oleksij Rempel <o.rempel@pengutronix.de>,
Marc Kleine-Budde <mkl@pengutronix.de>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH] lib: update DEBUG_SHIRQ docs to match reality
Date: Sat, 13 Jun 2020 13:39:24 +0200 [thread overview]
Message-ID: <20200613113924.GA5578@kunai> (raw)
In-Reply-To: <CAHp75VdMPt60CKnP1HtkN8=3iY7+Kgrv6b9DTjcj-KMKaRknvw@mail.gmail.com>
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> > There is no extra interrupt when registering a shared interrupt handler
> > since 2011. Update the Kconfig text to make it clear and to avoid wrong
> > assumptions when debugging issues found by it.
> >
>
> I'm not sure.
> I have recently fixed a bug in the IIO sensor during ->probe() due to
> an issued test interrupt exactly as soon as the handler is registered.
$ git grep DEBUG_SHIRQ_FIXME
kernel/irq/manage.c:#ifdef CONFIG_DEBUG_SHIRQ_FIXME
There is no place to enable this code.
Maybe your case was like Krzysztof's case where the issue turned out to
be the extra interrupt on deregistering after a deferred probe? He
thought it was the initial interrupt but it wasn't.
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next prev parent reply other threads:[~2020-06-13 11:39 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-12 12:48 [PATCH] lib: update DEBUG_SHIRQ docs to match reality Wolfram Sang
2020-06-12 13:15 ` Krzysztof Kozlowski
2020-06-13 11:11 ` Andy Shevchenko
2020-06-13 11:39 ` Wolfram Sang [this message]
2020-06-13 11:54 ` Andy Shevchenko
2020-06-22 15:56 ` Wolfram Sang
2020-06-22 16:01 ` Andy Shevchenko
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