linux-kernel - Re: [PATCH] kernel: irq: Extend lockdep class for request mutex

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Message-ID: <CACRpkdYGyQriK9cC4R1uCPe6OfFN4pzRpBB+vK2Yea7_qAQ+sw@mail.gmail.com>
Date:   Tue, 12 Dec 2017 09:59:36 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Andrew Lunn <andrew@...n.ch>, Marc Zyngier <marc.zyngier@....com>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Grygorii Strashko <grygorii.strashko@...com>
Subject: Re: [PATCH] kernel: irq: Extend lockdep class for request mutex

On Sat, Dec 2, 2017 at 6:11 PM, Andrew Lunn <andrew@...n.ch> wrote:

> The IRQ code already has support for lockdep class for the lock mutex
> in an interrupt descriptor. Extend this to add a second class for the
> request mutex in the descriptor. Not having a class is resulting in
> false positive splats in some code paths.
>
> Signed-off-by: Andrew Lunn <andrew@...n.ch>

Alas, I don't understand how lockdep works. But if the IRQ maintainers
like the idea they are free to merge this with my:
Acked-by: Linus Walleij <linus.walleij@...aro.org>

It seems Thomas is busy, looping in Marc Z as IRQ maintainer.

Yours,
Linus Walleij