Re: pca953x: lockdep warning since 4.10

From: Clemens Gruber
Date: Wed Jan 11 2017 - 10:15:42 EST


On Wed, Jan 11, 2017 at 02:43:31PM +0100, Linus Walleij wrote:
> On Sat, Jan 7, 2017 at 9:54 PM, Clemens Gruber
> <clemens.gruber@xxxxxxxxxxxx> 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?

Yes, the lockdep warning disappears. Thank you.

>
> Please provide Tested-by if it solves your issue.

I'll send my Tested-by tag in reply to your v2 of the patch (due to the
typo in v1, which breaks the build)

Clemens