linux-kernel - Re: pca953x: lockdep warning since 4.10

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Date:   Wed, 11 Jan 2017 14:43:31 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Clemens Gruber <clemens.gruber@...ruber.com>
Cc:     "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Wolfram Sang <wsa@...-dreams.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: pca953x: lockdep warning since 4.10

On Sat, Jan 7, 2017 at 9:54 PM, Clemens Gruber
<clemens.gruber@...ruber.com> wrote:

> I observed the following lockdep warning when booting an i.MX6Q board
> with several PCAL9555A gpio expanders connected over I2C. They are
> connected to 3 separate busses, there is no i2c-mux in use.
>
> This warning appears with the latest mainline Linux kernel 4.10-rc2:

Can you please test the patch with subject:
"gpio: provide lockdep keys for nested/unnested irqchips"
that I sent out a few minutes ago?

Please provide Tested-by if it solves your issue.

Yours,
Linus Walleij