Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning

[Wolfram Sang]

On Fri, Sep 16, 2016 at 06:02:41PM +0200, Bartosz Golaszewski wrote:
> If an I2C GPIO multiplexer is driven by a GPIO provided by an expander
> when there's a second expander using the same device driver on one of
> the I2C bus segments, lockdep prints a deadlock warning when trying to
> set the direction or the value of the GPIOs provided by the second
> expander.
> 
> This series exports an already existing function from i2c-core as
> public API and reuses it in pca953x to pass a correct lock subclass
> to lockdep.

Looks good from my POV, but will wait for Peter to comment.

If accepted, I'd think this should go via my I2C tree and I would like
to ask Linus to ack patch 4. D'accord, everyone?

Thanks,

   Wolfram

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